So I rebuilt a LQ4 with LS3 heads and intake with a BBK 100mm Cable TB and ASA Cam. The motor has a hard time starting unless I crack the throttle blades abit (TPS voltage reads 0.71v). Once its started it gets into a good idle but sets the IAC position to 0. After a while, it starts running away and increasing the idle RPMs.
What should i be looking at to fix the starting problem? i know i need to dial back the throttle blades a bit. Do i need more or less starting timing/Fuel?