working on a 2002 avalanche 2500 with an 8.1l 4l85e. customer supplied me with a raylar engineering ported intake manifold and 90mm 6 wire throttle body (believe its an ls2). also installed headers and full exhaust. the issue im running into is upon start up i get a p1514 "tp/airflow correlation" and the truck goes into limp mode. ive never delt with throttle body upgrades on the v8 stuff, and the warning for the airflow and throttle body settings have me a bit nervous.

anyone have some insite on getting this sorted. ive been searching for hours and come up with nothing. thanks