Just put a skunk 2 intake on my B18C Now it idles way to high and it wavers, but if I take off the intake and stick my finger into a manufactured hole in the inside of the throttle body towards the rear side of the engine, right before the butterfly it works great. There is quite a bit of suction in that hole. I am throwing a code for the IAT sensor as well. Do I have a seal out of place? Iâ€™m not sure what might be wrong here.