ok guys here's the story. i have a 1998 gt. i bought a 1997 cobra motor from my teacher at wyotech. i put the motor in, used my trans, used the cobra wiring harness. now the problem is, the cobra computer wont let my car start (the theft light blinks) so i put the gt computer back in and it runs like crap, but it runs. so my question is, for the cobra computer, would i have to buy the sct chip (my school has the tuning software) and disable the theft system and it should work then? or should i fully tune my gt computer to work good with the cobra motor. (i think it runs like crap with the gt computer because the spark timing and fuel mapping is different for the 2 motors. please someone give me advice soon i need major help i have to drive my car home next week when i graduate and my car needs to be out of the shop by wednseday. thanks guys