so i recently changed out the old k&n cai with a sr performance cai and also put on a bbk 65mm throttle body at the same time but after i did that the car is now idling 1700 to 2500 rpms in park and then drops to about 1000 when in drive and reverse not sure whats wrong no codes have come back anything helps thanks

 

Probably from changing throttle body size without tuning it. Probably taking in more air with bigger throttle body than computer can compensate for or more than computer thinks it's getting

 

Definitely.