Quote Originally Posted by Crapdaz View Post
i've got the P309R but when i put it on it leaks cause it doesnt suit the stock TB and IM cause of the gap. If i had the Civic Si one it would work properly, cause the gap would follow through and TB end would block it.
sorry got my 9s and 5s mixed up lol

yep.... very true...

but if you intend on using the J32A3 TB, the bypass hole in the RBC is welded up, meaning that you could easily use the P309 and not leak air! problem solved, and u gain power!