I am finishing a old Chevy II swapping in a 4l80 with standalone controller. The car has an LT4 and had an 8L90. I installed the standalone unit, tapped the TPS signal, and tried to setup the ECU, but the TPS learn would not take. I hooked up the vcm scanner and TPS reads 31% until you blip the pedal, when it will go from 21% at no throttle and 40% max at WOT. Ive verified 5v ref and low at the connector. Ive tried to do a TB relearn, unplugged the battery to reset everything. Its still persisting like its almost stuck in limp mode. has anyone ever had the throttle cap so low on the scanner? could it be as simple as a bad TB? Ive attatched a log and closest to unmolested tune i have for the thing.