Would the throttle body and intake manifold off of a 94-01 GSR fit on my 99 SI's B16a2. Im fairly sure it will fit. But what is the difference between the diameter of the throttle bodies and is it a worthy performance upgrade for $100?

 

The GSR intake manifold sucks, its poorly designed. Its got butterflies inside of the runners......thats why I had mine switched to a Skunk2 before it even got swapped.

 

What about just the throttle budy, any worthwhile gain. I was planning on getting a skunk2 mani anyways and was mainly interested in the throttle body.

 

the gsr tb is a couple mm bigger, but without bigger cams and whatnot, youre not going to get much of anything out of it. i guess any power is worth it, but i would at least wait until you put on the new manifold. though on a b16, i would just stick with the stock manifold, or maybe step to a type r one. until you have quite a lot of mods, its tough to improve on the OEM honda manifolds, except the gsr one.