so..how much power did they give you're 4.6?
 

i jsut got a catted H pipe and full length headers from BBK......... how much hp increase did u guys see with an H and full lenghts added? if this should be in power adders my bad i wasnt sure which one to post in.

Edit: i noticed i spelt "your" wrong in the topic..oops

it should give you enuf to notice a difference...acutal numbers would range from 10-20 if that

EDIT: lets hear it!!!!! haha

i gotta get em in next week...waitin for the wallet to refill but BBK claimed 25hp out of the combo so we'll seeeeeeee jsut want others expierences

I would say 15 - 20.

25 might be right if using fly wheel hp. If you only saw 10, I would believe that too.

12-15rwhp and a little peak tq on average from the dozen or so I've seen first hand. None of the longtube kits I've come across fit right and they all ended up leaking to the frustration of the owners. Bassani mid-lengths are getting the same 12-15rwhp gains and fit right and restore some ground clearance. Just an FYI... not recommending anything.

Oddly enough I got 12rwhp from a bassani catted x and flowmasters with pro-dumps on 2.5" pipes w/ stock manifolds. Didn't have to drop the k-member either.