okay so i have a b18b with a gsr head and itr manifold.. when i start my car the idle drops to about 300rpm for a sec then gradually goes up to 1000rpm.. and idle fine from there and there is a check engine light but i tried to check for a code but it wouldnt give me one.. and when i gas it up to 1500-1700 it studders and even when i try to drive it, it jerks like crazy at 1500-1700 rpm.. every time the need drops there it just studders.. it happen to me last time but i check the iacv and i cleaned it with brake cleaner problem went away.. but now its back even worse.. any ideas?

 

ITR IM dont fit gsr heads.

 

correct on that one unless it was modded to fit

 

well figured it out.. it threw a code because i was using the wrong one to check the codes.. noob hahahaha but yeah it threw a code 14 which is the iacv. need a new one now.. grrrr

 

or try cleaning the one you have