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All rights reserved. In order to help the engine start much more quickly, the system also injects a large squirtPrime Shotfrom all of the injectors a few moments after the key is turned on. This project started from a conversation with Summit Racing tech support about the performance of the MAX-efi 500 system in a race application. Some states do not permit limitations or exclusions on warranties, so the above limitations may not apply to you. Because the manifold will be dried out during the time of no injection, extra fuelDfco Return Fuelis needed to re-wet it, to avoid a long lean out period. I always seem to be tinkering with it and honestly just want to get it running smooth so I can enjoy it this summer. It shows the learned value of the TPS when its fully closed. Idle AFR Target= Target AFR of fuel control when the engine is at Idle. The decay adjustments shape that curve. Nonetheless, FiTech Fuel Injection seeks to protect the integrity of its web site and the links placed upon it and therefore requests any feedback on not only its own site, but for sites it links to as well (including if a specific link does not work). I went through all the vacuum hoses and all seems to be great, and took another look at the intake and throttle body and it appears there is nothing obvious that would cause a leak. Jun 6, 2022 I hear that type with the ecm in it could have problems. 2 OPENING THE BOX 3 INSTALLING THE THROTTLE BODY 4 INSTALLING THE WIRING HARNESS AND ECU 5 CONNECTING THE WIRE LEADS AND GROUNDS 6 COMPATIBLE IGNITION SYSTEMS 7 FUEL PUMP AND FAN HOOK UP 8 HOOKING UP FUEL LINES 9 SETUP THE HANDHELD 10 STARTING THE ENGINE & ADJUST THROTTLE 11 INITIAL ADJUSTMENTS AND DRIVING 12 FAULT CODES 13 Documents / Resources To reduce the risk of fire, electrical shock or injury when using the appliance, follow basic precautions, including the following: DANGER Resetting and letting it whistle just isn't enough. 199 means that the Fast Accel fuel is nearly doubled if the throttle is moved quickly enough.Tipout -20F= Tipout is the term used to describe when the throttle is closing. Summit Racing SUM-240505 Summit Racing MAX-efi 500 Fuel Injection Systems | Summit Racing. | 2022 CarsBiz Magazine, Factory Ford 302 roller cam block with .030 inch overbore, Ford GT-40P iron heads with minor porting, Schneider Racing roller camshaft, 286/294 duration, 0.520/0.528 lift, 108 centerline, +Power lead connected directly to the battery, Ground lead connected directly to the battery, not a body ground or the engine. Its here again to help find it quickly when adjusting the fueling after the engine is started and the engine is cold.Warmup 65F= This is the exact same value that is found in the Fuel Control section. The MAP drops rapidly, which means vacuum increases rapidly, and the fuel suddenly vaporizes off of the wall, and the injected fuel quantity is less. Need help as I am about to pull what hair I have left out. During certain situations, the injectors can be turned off. Do Not Sell or Share My Personal Information -. This will appear as a very lean condition, but dont worry its far from any kind of danger theres no fuel at all! If you are controlling the electric cooling fan with the system, set it to Enabled. I warmed it up and took it for a drive, the AFR is sitting at 13.1 at idle, with any throttle input it goes up to almost 20! Summit Racing Inline Fuel Pump, 340 LPH, 90 PSI, Summit Racing Adjustable 4-Port Fuel Pressure Regulator, Support for the RPM Act Continues to Grow in Congress, Heres How You Can Help it Get Passed! Fuel Trim Max= This limits how much extra fuel can be added by the fuel trim.Fuel Trim Min= This limits how much fuel can be removed by the fuel trim.AFR Loop Speed= This adjusts how quickly the fuel trim increases and decreases the fuel to achieve the target AFR.Idle Trim Rate Pos= At Idle, the fuel trim can be slowed to improve the stability of the AFR and engine speed. 100 means that no help is given by this function. Yeah, I don't know why the basic instructions don't explain how to properly calibrate the iac. This clears the fuel learning, idle air learning, and closed throttle position learned value. Southern Indiana home and started racing junior dragsters when he was 10 years old. 807 Priming Carb. One issue we encountered was that the systems ECU seems to be very sensitive and requires clean power. Spark is based on MAP, and MAP (and thus load) can get pretty high even with low throttle openings at low RPMs.WOT 3000 95kPa= Spark Advance at high loads and 3000 RPM. Fault Clear 1= Set this to 1 in order to clear any recorded faults. One huge difference I notice other than the smooth idle is that the fuel pump no longer has a high pitch noise, just a deep noise like it is pumping fuel. When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Handheld User Manual Introduction and Important Notes Welcome to the new Summit Max EFI handheld controller! 0 means it uses the default calibration directly.Fast Decay 20F= A larger decay will shorten the amount of time that the injectors are adding fuel during a transient. These are the Handheld Controller Feature Definitions as seen above. The system has great out-of- the-box performance, and is a heck of a value for a budget-level race engine. Stand by with a fire bottle and start the engine. If the timing is right, it will start and the fuel pump will fill the carb. Enter a VIN to learn if a specific vehicle needs to be repaired as part of a recall. Shop Fuel Injection Systems at Summit Racing. On the face of it, the systems ability to self-adjust fuel delivery, excellent throttle response, and smooth idle would make it ideal for a sportsman-level race car, especially for circle track and endurance road racing where the engine is subject to continuous throttle changes as the car goes through corners, S-turns, and chicanes. I will report back tomorrow but I'm about 99.9% sure the filter orientation was the issue. Make sure to set this temperature below the Fan ON Temp.Option Fan1(2) Enable= If you are not using an electric cooling fan that is controlled by the FiTech ECU, set this to Disabled. I've EFI'ed 3 vintage cars so far and I've done inline fuel pumps, spectra in tank pump, and proper in tank setup with a baffle. I'm thinking fuel starvation? The only other sensors are coolant temperature and exhaust oxygen. Terms of Service - Privacy Statement - New from Summit Racing theMAX-efi 500 Fuel Injection System. After the EFI conversion and dyno testing, we went back to the track to test the car. Learn how your comment data is processed. Hi, did someone here finally tried the summit max-efi 500 throttle body kit? If there is a consistent amount of fuel trim needed in a particular area, the fuel learning will adapt to that amount, so that the Fuel Trim can work near zero adjustment. If more resolution is desired, increase this number to make changes appear more quickly. After installing the MAX-efi 500 system we went back to the chassis dyno. This could easily be deemed total timing when comparing to a distributor, but due to the flexibility of a 33 matrix, this doesnt limit you as such.WOT 6000 95kPa= Spark Advance at high loads and 6000 RPM. Failure call the Summit Racing Tech Line at (330) 630-0240 or go onlineto follow these instructions may result in malfunctioning of theto: www.summitracing.com. For a better experience, please enable JavaScript in your browser before proceeding. After combustion starts and the speed picks up above about 500 RPM, the engine begins the speed density calculation, along with the Warm Up and Afterstart fuel. The fuel added during a transient has to be added in a special way to cause the wetness to build correctly over several injections. Installing the Summit Racing MAX-efi 500 Fuel Injection System on Redferd. We set the cam size at 4 and target A/F at 13.9. Search by VIN. The team reflects this mission. That makes the wiring harness more compact and easier to install. This value only applies to AFRs displayed while the throttle is CLOSED. Adjust this to get good starting response.Afterstart 20F= This is the exact same value that is found in the Fuel Control section. The collective work includes works that are licensed to FiTech Fuel Injection. This wetness also must be supplied in addition to the fuel that is intended to reach the cylinders. Remember that timing less than the base advance Distr Base Deg is not allowed, so choose the base timing carefully.Boost 3000 180kPa= This is full throttle but with a supercharger or turbocharger boosting to about 11.6 psi. Combines the Side Barrier Driver and the Side Pole Star Ratings into a Front Seat rating. Overall, we are very happy with it. This wet film of fuel on the surface is much thickerat cold engine (fuel doesnt evaporate well when cold), and also varies greatly with vacuum (bigger at high loads, smaller at low loads). For $100 I can buy the computer and for another hundred I can . Butl85 on 06-09-2022. . The Target RPM will decay to the normal idle speed in a controlled manner. Free Shipping - Summit Racing MAX-efi 500 Fuel Injection Systems with qualifying orders of $99. Reset IAC Learn= Set this to 1 to clear the IAC learning. A smaller Decel RPM Decay value will be SLOWER.Decel IAC Decay= When the throttle is closed, and the engine is returning to idle speeds, the Decel Open IAC steps will need to be removed in a manner that nearly matches the Decel RPM Decay of the Target RPM. The MAP is directly used for Accel Pump fuel. Computer Chips & Tuners; Performance & General Engine Building; Supercharger, Turbocharger, Nitrous Oxide & Water/Methanol Injection; . This past June, we ran the Mustang with the carbureted engine configuration at Sonoma Raceway, our home track with challenging 2.52-mile road course. Would the switch to EFI upset the balance of power, reliability, and fuel economy we worked so hard to develop? The Side Barrier test simulates an intersection collision between a standing vehicle and moving barrier at 38.5 mph. Fan 1(2) ON Temp= Above this temperature, the electric cooling fan will be turned on.Fan 1(2) OFF Temp= Below this temperature, the electric cooling fan will be turned off. I talked with Summit tech and was told it's made by FI tech for Summit. The temperature used is called the In Cylinder Temperature which is calculated as being somewhere between the coolant temperature and the air temperature, depending on the air flowrate. Adjust this to get good starting response.Crank Fuel 170F= At warm engines, the default calibration decreases the fuel injected by a large amount. Also, torque is not even desired, so, fuel can be cut off. This value adjusts how quickly fuel is increased (towards richer).Idle Trim Rate Neg= At Idle, the fuel trim can be slowed to improve the stability of the AFR and engine speed. If an intercooler, other charge cooling device or a fuel with plenty of octane is used, leaner can be tolerated. Show Printable Version. The fact that it's running good for a few minutes right after you start it up is the first thing that stands out. Applicable law may not allow the limitation of exclusion of liability or incidental or consequential damages, so the above limitation or exclusion may not apply to you. To ensure absolute reliability we did the following: The Max-efi 500 system requires a return-style fuel system generating 58 PSI of fuel pressure. No timing control though. Offenhauser DP, Long tube headers, HEI Distributor, Summit Max-EFI 500 fuel injection system. Every vehicle has a unique VIN. Its here again to help find it quickly when adjusting the fueling just after the engine is started.Afterstart 65F= This is the exact same value that is found in the Fuel Control section. It can add up at high RPM.Idle Advance= The spark advance desired at idle.1100 45kPa= Spark advance used just after throttle opens from idle. If no intercooler is used, the engine may require very little spark advance. 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