I recently installed the LS greddy turbo kit on my civic. I installed the hondata and everything. Started it up, the idle started to idle around 2k then dropped around 1.5k. When driving, it keeps on dropping from 1.5k to 2k. My friend said it's my IACV, I changed it and it still happens. Does anyone know what this is?? or can it be tuned out?

Also had a skunk 2 manifold on it, maybe that thing is throwing the code??

 

clean out your IACV with carb cleaner