Over the years, enthusiasts have figured out ways to utilize factory EFI systems and adapt them over to fit their needs. The problem is, the engine is now actually moving more air than it did before, despite the lower boost level. The setup wizard is extremely simple and self-explanatory. Long story short.... The Pro-M EFI system does not have the limitations your GM system has. Configurable fan deactivation based on TPS or VSS. Generous spare I/O for any standard/custom I/O needs. Basic time based and accel pump style AE. Control any relay controlled device or solenoid. This was a gain of 60 horsepower… but we had a problem.
But in search of more power, we've officially entered some gray area. The next step in the process was to set up the ECU. Those codes can be read and cleared using either your laptop, or any generic OBD II scan tool. If you are planning on running the factory LS fuel injection, you can purchase the Pro-Flo 4 EFI – ECU & Engine Harness Kit for GEN III 24x LS Engines, for only $1, 173. For this reason, the OEMs are moving away from using VE. Give the ECU what it needs and you will have good results.
Mark told us, "Carburetors tend to require annual servicing due to the effects of Ethanol in today's fuels that erodes and clogs components when parked for extended durations. Borla uses high-quality 356 castings and billet paired with OEM fuel injectors, throttle position, and MAP sensors to build custom fuel injection setups for popular Ford and Chevy engines, including modern LS and Coyote platforms. Unless you have the correct software, a computer, and some tuning knowledge, you would need to haul your car to a tuner for some dyno time and a custom tune. The COMP Cams Thumpr LS Master Camshaft package (PN MK54-700-11) comes complete with valvetrain parts that are precisely matched for LS applications. According to Richards, the Stoichiometric (ideal) AFR measurement for gas varies depending on the fuel: Normal pump gas is 14. I mean absolutely no disrespect to those people. "Since distributor-type ignition systems are typically victims to distributor gear lash that can cause inconsistent signals, our ECU averages the signals produced by the distributor just like most coil-on-plug systems, " he explained. The duty cycle is adjusted using closed loop feedback from the flow sensor. Here's another one... Again, no need to get upset... Tuning using boost pressure is a terrible method. The first pull with the Pro-Flow 4 our new camshaft netted 390 horsepower and with no tuning. Price wise they are very similar.
Long story short I purchased the system a few weeks ago and it arrived last week. If you want to play with the calibration, go right ahead. Again, not all Speed Density systems use this exact method. Then there is hopefully some way to decrease the advance as a fail safe should the meth system fail. While the install was rather painless, it did takes us a few attempts to get our laptop to communicate with the appropriate drivers for both the ECU and the wideband gauges. They work using mostly the same principles described above. I have found over the years that someone who is a die hard speed density advocate will fight to the death to defend it. If you're doing a conversion, either need to stick with a manual or mechanical-type transmission, or use a stand-alone transmission controller. The Howell TBI kit also allows for a custom calibration PROM for the engine and an ECM that installs under the dash, so no tuning is required, and each kit utilizes the OBDI GM diagnostic capabilities for scanning codes. The car fired right up on a 30 degree day and I was able to set the idle, tps, injector slopes with ease. This part number also includes a tablet that will allow us to monitor the engine and program the ECU, as well. Dyno Session Part 2. Another cool thing about basing everything on Load, is that it makes absolutely no difference whether its naturally aspirated, or has forced induction.