Originally Posted by ProjectMayhem
Re-word your question better. Do you mean outside diameter of the throttlebody that the y piece fits over?
That is exactly the question :P I'm basically looking for the size plumbing I'd need to have a Y pipe created to fit. I'm debating on a custom creation. I can have the Y created, but will not have time to measure until Saturday when I change the serp/pulleys.
Otherwise, I'm going to pick up the NW D CAI after xmas.