So I don't know where to begin, so I will just list the problems that its having. Its the LSA with the Lingenfelter 650hp kit. Engine/harness is straight from GM installed in a 2012 Colorado. It has these problems:
-With key off, TPS reports 30% until you tap the throttle. TPS goes to ~15% for a few seconds and then returns to 30%
-After startup, it idles fine until you touch the throttle. After touching the throttle, idle jumps to ~1500rpms and idle adapt advance freezes wherever it was at when the throttle was touched. Also occurs while driving as it tried to push through the brakes at a stop while in gear.
-No power enrichment. It knocks up a storm even out of boost. Commanded AFR never changed from 14.68.
-Sometimes at idle it will open the throttle to around 31% and pull 24° of timing to try to maintain idle speed. Spark is occurring past top dead center at that point.
What gives? Anyone had any similar issues?