Ok I just rebuilt the gsr before swapping it in. Now im having idle issues. its idling at 1500 most of the time and other times when you start it up it will rev really high. not sure how to fix it. its throwing code 14. i know it the idle control valve and tried swapping with two others i have around the house and same thing. This is what ive done to the motor 11.4 to 1 pistons, port and polished,3 angle valve job, stage 1 cams, intake manifold, and 68mm t-body. I have a chipped p06 computer. I've already checked the firing order, and the compression. both are good. any ideas would be help me out

 

Go through everything and look for vacuum leaks. They can also cause a high idle and code 14.

 

Does your engine have an FITV?

 

no I don't have a FITV on the car. the t-body didnt come with one and my motor didn't come with a t-body. do I need to get one?