Originally Posted by
superman07
Others may disagree but driver demand is pedal feel, I don’t jack with it to fix underlying problems elsewhere. I hooked up a physical Map sensor and logged versus inferred and found the Whipple cal was way off, and they hacked up other areas of the cal trying to resolve it. Even when I had removed IPC error the car ran poorly until I went back to basics and fixed basic air mass calcs. This meant almost starting over. I removed all unnecessary and nonsensical compensations whipple made, then confirmed MAF, then made SD within a couple percent for all mapped points. Once I had confidence and accurate airmass numbers the hacks to torque tables etc then became more obvious. But if your trying to fix torque issues, and your not 100 percent on injector data, fuel pressure, and airmass - your just pissing in the wind.
In my case a couple percentage point difference in Torque can create or remove very large IPC errors. I would not recommend 20 percent swings except possibly at the lowest area. A 3lb difference in my car is the difference between a smooth idle and takeoff, and a idle that seeks, hangs, retards timing to the point it raises head temps, and jerks transitioning into the next mapped point. All torque tables must rhyme, you don’t want a torque request to either open or close throttle quickly as your mapped points, and valve timing changes.