Originally Posted by my99blueSi
i have a 99 si and was wondering if anyone has the skunk2 i/m and what kinda results did u have w/it. also can u feel any difference or not or should u get bigger throttlebody and the same time.
Hey man,
I used to have a SKUNK2 IM on my car, when it was N/A and had the orig B16A head on it...
You will feel a slight difference above like 7K, it will pull stronger to redline, assuming u got 4-1 header...
U should get TB cause IM's dia is bigger, so it matches SKUNK2 IM
later