Fitech Running Lean
With the FiTech, the A/F was all over the place, sometimes too rich and sometimes too lean, and the drivability wasn't very good. As you probably have already figured out, detonation (aka "knock") is a big issue in the world of forced induction. I would never buy that system again. Remember this is at idle so it is not an issue with overheating the heads and burning valves. Advanced Tips for EFI Tuning with Fuel Pressure. Find Holley Sniper EFI 650 HP Super Sniper Fuel Injection Systems 550-518 and get Free Shipping on Orders Over $99 at Summit Racing! Looking to convert your blow thru carbureted turbo engine to EFI?. FiTech - running rich, AFR not trimming? I did some testing yesterday with my replacement unit, and it's doing the same as the old one. Bugcatcher, Birdcatcher, Buzzardcatcher, BAU, big and ugly versions available. She's running pretty rich (12. 9, 65F= -16. However, running too lean a cruise mixture will cause the cat converter to overheat. The unwanted gases, called "blow-by", are gases from the combustion chamber which have leaked past the piston rings. It seems that Holley has a new 8 injector throttle body (sniper) that will support up to 1200 hp. Fitech lean tip in keyword after analyzing the system lists the list of keywords related and the list of websites with related content, in addition you can see which keywords most interested customers on the this website. Fitech says 5 to 10 IAC counts at warm idle is good. Hot Rod claims that this engine put out an impressive 382 HP and 456 ft-lbs of torque! As soon as I have my engine run on a dyno, I'll post the results in this article. I thought about doing a little more tweaking, but since it’s running well with no stumble I’ll probably just leave it. Sometimes under steady state cruising, sometimes in transient tip-in or tip-out. 7L engine is quite impressive with over 280 hp at the wheels and 8,000 rpm to play with. I could be mistaken. The most important thing to remember with EFI is to tune ONE THING AT A TIME. lots of guys on VMF run them. -Start with a COLD non-running engine. Secure Log-On for E*TRADE Securities and E*TRADE Bank accounts. I spoke to Firecore and they stated a MSD 6al box is not compatible. Book a test drive or locate a car dealer near you. On deceleration, if I keep it in gear, it will obviously continue to run. From FiTech Owners Facebook Group It is generally accepted that the default Prime Shot value (258) is way too high. Meanstreet offers an onboard ECU and fuel pressure regulator to bring you simple, clean wiring and an easy install. In effect, that status makes the engine perform with less gasoline than it needs to operate properly, and it increase the amount of friction between the engine's moving parts. This is basic overview of the most common setup questions. 2 Short Term Fuel Trim in general makes very quick and small temporary changes to the fuel being delivered to the engine. I run manifold vacuum on all the cars that I build, and it works just fine and keeps the engine temps down at idle. Thought I would try and jumpstart a discussion about Hi-Performance Straight Eights. Hot Rod claims that this engine put out an impressive 382 HP and 456 ft-lbs of torque! As soon as I have my engine run on a dyno, I'll post the results in this article. Fitech said that their control, varies the fuel pump speed based on demand. During normal cruise-mode on the Interstate, I slowly leaned the air/fuel ratio (increased numbers) until I noticed the engine starting to surge slightly. Cylinder 1 Injector Circuit Malfunction. You could also be experiencing vapor lock inside the command center, there's a huge thread about it on a Chevelle forum, in the end the guy ended up going with the Tanks Inc. When I drive the car my eyes literally burn from the exhaust and I smell of exhaust pretty bad. Overview: We designed the SPAL fan wiring harness to enable the simplest installation of our performance fans. Check out his U-tube videos. If that FITECH-system really works well it would be a total game changer because at that price level it becomes much harder to justify a carb which - if you want it to perform even close to an EFI - HAS to be tuned by a shop on a dyno. Goes lean for a split sec and then the ecu dumps a bunch of fuel and bogs bad. Having run at 12. Not running in the car yet, but it ran well on the dyno with timing control. Had to have some help here and there but np. “I had people messaging me on my personal Facebook asking how they could buy the product, it was a total home run. Nothing better then full control over everything plus running flex fuel on big power, with a ton a failsafes. Fitech just came out with a new G Surge module that does not have a float. The most important thing to remember with EFI is to tune ONE THING AT A TIME. I have a fitech dual quad on my 511 stroker with a tunnel ram. The problem with doing a multi-pump system is that if one of the pumps fails, your car will still continue to run and you won’t realize that there is a problem until you go for the redline, and your engine runs short on fuel right when it needs it most, and you blow the engine because you ran lean. This will not work that great with the FItech as it is so low of a rpm that it thinks it's the starter cranking the engine over and does certain things until it's at running rpm's. Fitech 493/383, Firmfeel, RMS Streetlynx work in progress. MASS AIR fuel injection system Ford Ford 429/460 - Have you looked at all those systems out there that claim to be fuel injection but are really nothing more than a carburetor with four injectors stuck on them in place of jets. The PWM settings work for both FCC or the G Surge unit. The problem I'm having is a off-idle/tip in lean out. Working with FiTech and they say youll never get it to run right without phasing the rotor. as there is no safety factor here it seems like it would go lean and hurt/melt parts on your engine you should have a much larger rated fitech unit or be running. I've also seen people saying that exhaust leaks can do this also. MARKETS WE SERVE Engine Builder Whether it’s making minor performance upgrades or building an engine from the oil pan up, Motor State Distributing stocks the parts and equipment that an engine builder needs to maximize performance for virtually any application. 100% wet-flow tested by Holley technicians to assure it arrives ready to run; Note: This is not a stock Corvette application carb but a good replacement for a 1970-1972 LT-1 Corvette. for example, i am fighting a lean tip in which wont change with any kind of accelerator pump change. Another motivation is the 70’s 302’s tendency for overheating at idle. Secure Log-On for E*TRADE Securities and E*TRADE Bank accounts. Oola makes clothes and accessories for women who otherwise have no access to outdoor activities due to the lack of modest activewear options. 7 - and thats what the o2 sensors dial it into - it thinks that it is actually running at 29. By Daniel J. I'd have gone with bills kit if it wasn't for that $400 difference in price. But most engines will run from about a 12- to 15-to-1 ratio of air to fuel. That's the base system from Fitech, which doesn't have any timing control. You can get carbs to run good at an idle but what about higher revs. You probably know that detonation is a bad thing, and that by adding a supercharger (or any forced induction power adder), you must take additional measures to avoid detonation, especially if your engine has other modifications. FTTech does have a fuel pressure transducer in the TBI; not sure how it controls the fuel pump voltage to regulate pressure for all of the requirements of a blown engine it should not increase the injector duty cycle when the pressure is lower under load and then change it back to a shorter duty cycle when the pressure is kicked higher during higher load requirements???. Below is my eventual root cause fix, in addition to new RPM-specific accel pump adjustment from the newest T198 software rev. Both the Fitech 600 and the Holly Sniper are great EFI units. In both cases, you will need a coil and a 2 wire distributor. I just needed the distributor and coil. Artivest is one of the exciting New York City-based startups we'll be visiting as part of our Lean Startup Labs Enterprise Summit Feb. Buicks do not mind running lean. This forum is for Slant Six and "A" body fans. Looking at the data file when I did a short drive, it looks like it's too lean. 4 Left and Right. Again just my personal opinion. run a data logger out put and look at. Browse your favorite brands affordable prices free shipping on many items. 5 Also have optimized DFCO settings and dropped idle in park as slow as possible. Zip Corvette now has available a programmable ECM designed for early model C4 Corvettes. I thought the HSC stood for High Stroke Compression. Im really looking into this but reviews of the Sniper have been coming out as well. The tuning was conservative with a 12. FITECH EFI 600 Basic and Command center intall with pics, factory tank The 1967 - 1972 Chevrolet & GMC Pickups Message Board. I'm still concerned about #7 being so hot (lean) though there was slight improvement with this setup. Buy Bosch 17090 Oxygen Sensor, OE Type Fitment: Sensor harness for my Fitech installation. Active 3 years, 8 months ago. And occasionally the handheld says 615rpm annd the injectors fire like its running but the engine is not. 5 and 900 rpm's warm idle. Then close the butterfly's up with the adjustment screw and IAC's go to 50's. The improvement in drivability, starting and altitude compensation is dramatic. Rough idle, bad hesitation on acceleration, perfect idle with TPS disconnected (1994 Toyota Previa) Very rough idle with a repetitive cycle that is smooth for a couple of seconds then misses badly, occasionally stalling. Fuel pressure measured just before the throttle body at idle and quick revs. In the old days, the solution was to remove the power valve and rejet the carb accordingly. The fully programmable Pro-M EFI processor comes with tuning software and USB cable for tuning through the OBD II connection. Are you certain of the line the fuel is coming from? I'm just wondering if this bike has SISF overflow tubes on it. 040 over and also has a 4 barrel carb and an edelbrock performer rpm intake, headers too. Thought I would try and jumpstart a discussion about Hi-Performance Straight Eights. We put a comp 280h in a 352 that's been bored. However in terms of high-RPM function, it falls well short of ideal. An engine that runs lean will ping at higher RPM, when the throttle is open, as if you were flooding a gear. It is compatible with all types of vehicles and can be installed on positive or negative ground vehicles with no modifications. The 85% fraction is commonly sold at pumps worldwide (outside the US), and when specifically supplied or sold as E85 is always 85% ethanol (at pumps or in barrel). Dermie built a Fitech throttle body to mock up Dermie bought these retro LS to small block Chevrolet valve covers from Holly, they were a lot more affordable, but he felt that they were still pretty visible so he cut out half inch all the way around to drop the valve cover down even lower. This is basic overview of the most common setup questions. The logs showed it going pig rich, sometimes down into the 10. I installed Holley Sniper on three other Mavericks here in Brazil and the problem also exists. Find FiTech Go EFI 4 Power Adder 600 HP Self-Tuning Fuel Injection Systems 30004 and get Free Shipping on Orders Over $99 at Summit Racing! If you're running a supercharger, blower, or nitrous, and want to ditch the carburetor, you'll need FiTech Go EFI 4 Power Adder 600 hp self-tuning fuel injection systems. If the sensor shows lean but the plugs are black, then something isn't quite right. To get this I set the idle AFR to 14. Sometimes if there are outside problems such as bad misfires, exhaust leaks, or any other situation that could cause poor readings on the O2 sensor, the system will try to compensate in order to keep the car running. com is a massive internet community hosting over 100,000 members and growing each day. 1968 Chevrolet C10 454 Fitech fuel injected 700r4- AT- disc brake air bagged all 4 corners duel compressor 1998 step side bed rollpan front & back new wheels &. Examples of vessels running on methanol DUAL FUEL FUEL CELL PROJECT and R&D 7x - +4 1x 1x 2x 1x 2 stroke MAN 4 stroke Wärtsila high speed Scania, Weichai Serenergy fuel cell stacks MOL, WL, Marinvest Stena Line MI/SMA ScandiNaos Innogy HTWG Konstanz Viking Line SUMMETH/MARTEC, Lean Ships, Methaship, Billion Miles, FiTech, India, PCG Product. story and photos by Daniel Bennett. The system usually consists of a tube, a one-way valve and a vacuum source (such as the intake manifold). Buicks do not mind running lean. What I dont like about the fitech is the configuration of the tables in the handheld. Boasting the ability to measure the full scale of AFR values, the SAFR supplies motorsport enthusiasts the information necessary to accurately understand their vehicle's operation. Carburetion is the best EFI. Welcome to the TriFive. know the issue I am trying to fix is my power curve is way left. 1998 Mitsubishi Galant, manufactured fall '97. 1968 Chevrolet C10 454 Fitech fuel injected 700r4- AT- disc brake air bagged all 4 corners duel compressor 1998 step side bed rollpan front & back new wheels &. I personally love my fitech it's amazing, but with all the risk running the command center I just didn't want to risk it. It's quick and easy Simply choose PayPal when you select a payment option on this site, and you can quickly open a PayPal account and add your payment method to complete your purchase. I suggest you turn on the data logging and make a few runs that will cause the issue and see what the data tells you. everything was good and all of a sudden it just started surging at idle 300 to 1200 rpm. Use an in-tank pump. that don't really affect a carb can cause havoc with a TBI systems O2 sensor making it run rich or lean, etc. I had the unit running for a week or so and was fine tuning it when I decided to replace timing chain, gear, water pump, alternator, belts, etc I had to have it relearn with the new gear I put on learn how to do timing and I'm done with that now. The limitation for how much power you can make, assuming your physical structure is sound, is the octane in your fuel which limits how much boost and the timing you can run in your engine," said Snow. That fuction is FN371 it's usually always neccessary to demand enrichment when the transmission is engaged to prevent stalling or severe idle drop. for example, i am fighting a lean tip in which wont change with any kind of accelerator pump change. I take ABSOLUTELY ZERO CREDIT for the length of material you're about to read, however I have made a few comments in-text that you can see which I will highlight in green. Find out how fuel-injection systems work and about the various configurations used in the cars today. You probably know that detonation is a bad thing, and that by adding a supercharger (or any forced induction power adder), you must take additional measures to avoid detonation, especially if your engine has other modifications. I don't have a SD card in my FiTech but I think it's working know not sure, I did manage to get to the log file there was 4 files I deleted three went out run the car for a few mins push data log on let it run for a few mins, hooked it back up and there was 2 logs it's shows basic sensors. Not running in the car yet, but it ran well on the dyno with timing control. If the burn line is shorter than about 0. I just put my FiTech back on my Nova Monday night. Take the same Bronco with a good articulating suspension and go rock crawling and you just tore up a set of 40 tires on the Bronco's own inner sheet metal. The ecu with a narrowband o2 sensor, when in closed loop mode, will then lean on the fuel map if it is receiving a rich signal from the o2 sensor till its stoic. Being financially challenged, I preferred to be off a tenth running a little fat and run all season while the other guys scrambled to replace pistons. Below is my eventual root cause fix, in addition to new RPM-specific accel pump adjustment from the newest T198 software rev. 9 (318/360) Magnum motor. My buddy had one after high school. Now it's hesitating, bogs gave it gas other day no response engine kept running nada acceleration. For instance, a high boost engine running pump gas may require 10-15 degrees less ignition advance than the same engine running race gas. Calculated Load = Current Air Mass X Atmospheric Pressure @ sea level Maximum Air Mass Current Barometric Pressure Figure. The AFR Targets are used to give the fuel trim (fast closed loop fuel adjustment) a target and a multiplier. I lost my fuel cap a couple months ago. Both air and fuel are required for a BANG or explosion of power in the cylinder and if the correct amount of air is provide to completely burn all the fuel, then this is ratio is known as the Stoichiometric ratio, which is normally 14. If the AFR goes lean when it sputters then I'd bet on a FCC issue. I would never buy that system again. Probably 350 horsepower plus some nitrous. I have been having a few issues with FiTech controlling timing and just ordered an adjustable rotor. so the computer thinks its lean and is adding fuel I just don't know where to go from here. Log on to manage your online trading and online banking. Whether it's replacing the single coil mounted separate to the distributor, the HEI coil, a coil pack, or a coil over plug, we've proven on more than one occasion that coil upgrades do provide performance benefits including incre ased power you can see on the dyno. spark plug condition - sooty on the tip of the electrode, and the. As a result, a merchant service provider can recommend to the merchant that they need to upgrade their Internet speed so their business can successful run EMV software. That fuction is FN371 it's usually always neccessary to demand enrichment when the transmission is engaged to prevent stalling or severe idle drop. It will shut down the nitrous if it gets too lean. The FiTech unit also appears to have spark control functions built in if you want to lock out the mechanical advance and let that unit control spark. I'm fixing the auto temp a/c, tune up, complete repaint bright white, and removing the lean burn carb system for the new FITECH efi system. When I installed my fitech and was trying to learn it, I wish I had a walk through of someone's settings I could copy. Very rough start, idles fine, stalls as soon as I touch the pedal then stalls when you push the gas is because once it’s running the car’s other sensors, the. This carburetor is equipped with a manual choke. If you are road or circle track racing, go ahead and fi t jet extensions all around. The other issue that you need to resolve when plumbing the fuel system is whether to run the system as a returnless fuel system or run a return line back to the fuel tank. you tune the carb the same way you tune a roots blower carb but i have heard some insane horror storries about these setups as you said. I would say getting some airflow via running the engine higher rpm with trans in neutral has cooled it back down. One counterpoint to this theory is that losing an exhaust causes the engine to run lean, and this is what actually causes damage to the exhaust valves. The PWM settings work for both FCC or the G Surge unit. Use this chart to find the right Fitech product for your car. Secure Log-On for E*TRADE Securities and E*TRADE Bank accounts. As for the fuel i have sufficient pumps and the AFRs show no lean out so not sure what else i can do to tick off fuel as not being the problem. The problem is as soon as I hit the gas from idle to 2-3k it goes super lean. I personally know at least one guy running FiTech and loving it. 10 The Lean Burn Distributor from Summit was $90. But as he told CEO CFO Magazine, "investing in a private alternative is still. I am planning on installing the FItech system and noticed there is a fuel rev limiter function built in, which could be a simple fix to my issue. I'm not running a turbo but a procharger and the supercharger forums don't have much on FiTech. For example, you can run nitrous oxide, but the system won’t control it in a progressive manner like the 2. I hopped out and wanted to double check the base timing, and had the trigger hooked up to the starter with the timing light in my other hand and t. I sure hope running that lean isn't hurting anything in the engine - even though it's only for a minute or two. However, there are many do’s, don’ts, and rules of thumb that can be frustrating to learn the hard way. 36 but the 60 foot was real bad at 1. 70 turbo Cougar Fitech running I've had the turbo since 2006, but I couldn't tune out a bad lean backfire problem with the blowthrough carb. Irregular idle speed. So the 1971 is incredible. Ported vacuum will make your engine run hotter at idle and some times it will make you engine stumble on hard acceleration right off of idle, I said some times. I did some more digging in the Fitech web site, in there FAQ's section they did address that question single or dual plane and said that is a question to ask your engine builder that there system would run fine with either but is better to run which every one is compatible with your build. The cooling system in a C2 Corvette has plenty of faults, even in the original configuration, and when you start modifying the engine the problems only get worse. Hot Rod claims that this engine put out an impressive 382 HP and 456 ft-lbs of torque! As soon as I have my engine run on a dyno, I'll post the results in this article. This tune will run virtually any engine right out of the box. FiTech - What we have learned : Tips and Tricks *** Please keep this tech related *** Today I pulled the trigger and ordered Go EFI Power Adder 600HP kit in prep for my motor and trans swap this winter. full time drag car, ran a Biggs 750 DP. I'm redoing where some lines are run to hide them completely and I'm also doing a front suspension refresh. While it put down some decent numbers, it showed us that we were a little too thick on the fuel and needed to lean it out a little. 0:1 air-fuel mixture at part throttle. You'll need a square bore, four barrel carb intake without EGR provisions if you go with say FiTech, which is what I would go with if I were going aftermarket. If the O2 sensors indicate LEAN, the computer adds fuel and generates a POSITIVE fuel trim value. Complete sequential EFI with computer, full system tun-able and has all options for nitrous, methanol, supercharging, runs with Mass air flow sensor hidden in air cleaner. In Brazil, ethanol fuel is neat at the pumps, hence flexible-fuel vehicles (FFV) including trucks, tractors, motorbikes and mopeds run on E100. Fitech said that their control, varies the fuel pump speed based on demand. I tried it at the track for the first time last weekend and was able to pull a 10. Using venture capital principles and Lean Startup methodology, D10X encourages internal entrepreneurship by empowering Citi employees to build, test, and launch new solutions that are ten times better for our clients. As pointed out in the text, it must be mounted in the header collector or exhaust manifold down pipe. 3) White Fitech wire plugged into the tan Electric Choke wire (12V when on, but drops to 10V when cranking) I think this may be the problem, but not sure where else to get the constant 12V from. Was wondering if anyone has used the fitech efi kits for there foxbody as I just picked up a 85 4 eye I'm fixing up. was created by syllinx22 When in park it will sometimes start sputtering and if i give it gas it will backfire through the throttle body. No issues at all with the fuel pump. 7 AFR : 1 Lambda. 36 but the 60 foot was real bad at 1. I have been pointed in the direction of the fitech ls stand alone series 70050 and am just wondering if anyone is running one and has any feed back on the system at all. When FiTech Fuel Injection started doing business, the company hit the ground running - at full speed. After a few minor problems with the car itself and some minor tweaking , its a beast. Am currently building an ls1 into a r32 skyline and wanting to run a stand alone ecu. Working with FiTech and they say youll never get it to run right without phasing the rotor. I would say getting some airflow via running the engine higher rpm with trans in neutral has cooled it back down. Book a test drive or locate a car dealer near you. You’ll find complete 1967 Mustang carburetor rebuild kits or completely new carburetors from reputable brands you know and trust: • Edelbrock • Holley. The best Holley I ever had was an 830 I got used from an oval track racer. 9 AFR, then recover with the correct AFR and runs great that point). Replaced the in tank with a Fitech pump and put in a fuel pressure gauge near the throttle body. your timing is probably not a issue most e85 builds start out with the timing where it was on gas. Overview: We designed the SPAL fan wiring harness to enable the simplest installation of our performance fans. The next kit I used was a fitech it runs quite well out of the box and the addition of a wideband oxygen sensor makes these units self tuning to a point. I just needed the distributor and coil. We could really lean on the team for access to information and this was absolutely critical in helping us make the case for the trial. it is the most economical of the bunch. at 100% throttle, AFR Target is 12. Yes, you heard that right: Your car breathes, just like you do. 4 and after start 20F=8. 9, 65F= -16. I am planning on installing the FItech system and noticed there is a fuel rev limiter function built in, which could be a simple fix to my issue. If I'm right, your AFR's will be correct and consistent up until the FCC starts getting low on fuel and the pressure drops. If it surges ahead your Lean 2. However MSD doesn't make one for the slant 6. In the old days, the solution was to remove the power valve and rejet the carb accordingly. 100% wet-flow tested by Holley technicians to assure it arrives ready to run; Note: This is not a stock Corvette application carb but a good replacement for a 1970-1972 LT-1 Corvette. FITech has a new version for engines producing 400 HP!! Mine is one of those kind of engines! Price is $795. The engine starts with a click and idles nice. And now we get to turn our focus to the other fitech install that has to go. The oxygen sensors in the exhaust will alert the computer if the engine is running too rich or too lean and make the necessary adjustments to keep the air-fuel ratio as close to perfect as possible. Not too hard to do, just a little lathe work. lots of guys on VMF run them. Understand basic information about AFR values and the difference between narrowband and wideband. thanks for the info. When you are driving the car, is the FITECH controller on? If not, run it in large gauge mode with it set to monitor AFR. The AFR on the hand held says it's about 13. I'm on my 3rd summer running a FiTech Go4 600 on my 73 Eldo. Some throttle position sensors are adjustable. Completely fed up with this I swapped in a lean burn distributor and tried to let the fitech control timing but once the lean burn is plugged in there is no spark. I've been toying with the idea to try a fitech set up in my 95. Never had any indication of knock or vapor lock. From FiTech Owners Facebook Group It is generally accepted that the default Prime Shot value (258) is way too high. FiTech is plug and play with a MSD Distributor. After you have properly adjusted the stop screw and the TPS you will need to look at the dash pot. The oxygen sensors in the exhaust will alert the computer if the engine is running too rich or too lean and make the necessary adjustments to keep the air-fuel ratio as close to perfect as possible. IT'S ALIVE!! 351 out to 397, Scat Crank, Eagle Rods, custom made pistons, 12 to 1. The best Holley I ever had was an 830 I got used from an oval track racer. While it put down some decent numbers, it showed us that we were a little too thick on the fuel and needed to lean it out a little. Once that T-stat is open, if your engine wants to run warmer, it will continue to rise until the engine reaches it's normal running temperature. When I shift into gear from park to drive or drive to park, seconds later, I will have this same lean spike and the engine almost dies. This forum is for Slant Six and "A" body fans. Do you have the FiTech controlling the ignition or is the ignition a stand alone. I was driving the other day and suddenly the AFR jumped up to around 17 and when I hit the throttle it went supper rich and sputtered. The Fuel Trim will increase or decrease the injected pulse width in response to the sensed AFR – if it senses too rich, it will reduce the fuel, and if too lean, increase the fuel. A faulty ignition system is a possible cause of a engine backfire. Running Pro-M Racing system. so the computer thinks its lean and is adding fuel I just don't know where to go from here. The engine runs beautifully, with perfect idle at 650 RPM, but every now and then I hear the IAC give a sort of "snap" and the idle is at 1200 RPM. Your car breathes. “I had people messaging me on my personal Facebook asking how they could buy the product, it was a total home run. 2 stroke MAN 4 stroke Wärtsila high speed Scania, Weichai, a. Looking forward to running it in the car soon. Corrupt 1985-1989 Corvette ECMs and Prom chip limitations could be in your past. 1962 Ford Thunderbird Classic Cars for Sale. The intake design of the 4. While it put down some decent numbers, it showed us that we were a little too thick on the fuel and needed to lean it out a little. Executive Job Search with ExecuNet. com, 1955 Chevy 1956 chevy 1957 Chevy Forum , Talk about your 55 chevy 56 chevy 57 chevy - Belair , 210, 150 sedans , Nomads and Trucks, Research, Free Tech Advice. Welcome to the TriFive. I have the FiTech EFI on my 1975 Ford Bronco. I am confident in the build and all its setting, as I had a perfect running engine with a carb, just with the typical carb inefficencies, cold start annoyances, endless tinkering, and the occasional load ups on a hot day with traffic stop and goes. The o2 sensor was just downstream from the collector, so it sensed a super lean condition when all that outside air flooded into the exhaust. Use this chart to find the right Fitech product for your car. Using an external Aeromotive boost reference fp regulator. The last time I drove it, was right after swapping back to NON Timing Control, so it was almost starting from scratch. At this point, the laptop is not plugged into the ECU. Fitech says 5 to 10 IAC counts at warm idle is good. EEC Tuning with Quarter horse VS Fitech Efi. Before he founded Artivest, CEO James Waldinger was frustrated with the dinosaur pace of the investment world. If it does, the bottom of the float bowls will have short collector tubes running from the bottom of each of the 4 float bowls terminating into a common tube running from right to left. “I had people messaging me on my personal Facebook asking how they could buy the product, it was a total home run. The ecu with a narrowband o2 sensor, when in closed loop mode, will then lean on the fuel map if it is receiving a rich signal from the o2 sensor till its stoic. I lost my fuel cap a couple months ago. On a fuel injected car, you either run PCV as Ford set it up, or run NO PCV, and run breathers. Recently, there has arisen a debate about the merits of certain intake manifolds versus other intake manifolds specifically for the Chrysler 5. I will also run an earth wire to each head as suggested by msd. The problem was finally found by using a pressure gauge which would show pressure dropping to zero, the motor running like crap. 36 but the 60 foot was real bad at 1. Accel Decay 20F = A larger decay will shorten the amount of time that the injectors are adding fuel during a transient. With dual quad carbs, each barrel will balance the its own AFR as air flow increases. 6:1 AFR at peak torque, a 12. Ok, then the most likely cause is a failed MAP sensor inside the ECU. thought I would share with the forum, i am testing a throttle body fuel injection system in my 400 this weekend. It ran great but always was rich. I've been slowly working through my problem with little change. Ron Fiedler is on Facebook. The engine is a 468ci big-block with a mild hydraulic roller cam, a TH400, a warmed-over converter, and 3. Boost reference connected to the Aeromotive and capped at the FiTech unit per instructions from FiTech. The car is running really rich even though my fitech is showing that its running its target afr's. It is very important where you locate the bung for the o2 sensor to get accurate readings. run a data logger out put and look at. can didnt have a single issue, was gone through after each event. Then discover how to target desired AFR values with the modes featured on the AFR+. They can be confusing if you are just learning the basics of how to tune a fuel injection system. Buy Bosch 17090 Oxygen Sensor, OE Type Fitment: Sensor harness for my Fitech installation. Those special gasoline additives sold at auto parts stores don't have any significant effect either. Is the weird noise you may be hearing detonation? What about the O2 sensors? Have you checked for trouble codes? Normally is you're running lean or rich you will see 173 - 177 codes. Too lean, first check the EFI temp sensors for around 1000 ohms cold and not infinity. 4 billion per day; the forex market trades about $5 trillion per day. Am currently building an ls1 into a r32 skyline and wanting to run a stand alone ecu. 3) White Fitech wire plugged into the tan Electric Choke wire (12V when on, but drops to 10V when cranking) I think this may be the problem, but not sure where else to get the constant 12V from. A backfire in the intake manifold is caused by a ratio that is too lean (not enough fuel). I am on my third try to switching over to E85 using my FITECH 1200 PA on a SBM with a D1SC procharger (I know, but there seems to be way more tuning gurus here than the supercharger forums lol) and I am once again running into the same problem and nobody seems to know why. When I drive the car my eyes literally burn from the exhaust and I smell of exhaust pretty bad. Generally, running somewhat lean can improve emission control results and fuel economy. Nitrous Oxide Basics Explained. Following is a list of causes for a remanufactured engine to fail early in service, and. This Startup Tuning method completely disables the Prime Shot and relies on Cranking Fuel and Afterstart Fuel to start the engine. I love the Sniper setup.