Hi All, My 03 4 spd auto ba xr6t is having an issue on startup. When started (generally on cold start) the revs go high which I assume is natural for a tuned xr6t but then stay high for like 15-20 seconds sometimes more, and if I go to put it into any other gear, the engine light comes on and the car will auto stall. It has a wog cooler, upgraded valve springs, 42lb deka injectors, rebuilt auto, cold air intake and tuned to 280rwkw. The following codes have come up on a test: P0171 - System too lean P0238 - Lack of HO2s - 11 Switches indicates lean (B1, S1) P2105 - Throttle actuator control system - forced engine shutdown (assuming when I try to put into gear when revs are so high at startup) P2110 - Throtle actuator control system - forced limited RPM. I have also noticed under WOT I feel the boost having gaps, I can even hear the induction gaps from the CAI... Can anyone give me their 2 cents as I am totally lost at the moment. Absolutely any suggestions would be greatly appreciated. Cheers,