4" downpipe is going to be interesting, expecially under the k-member...
I know everyone thinks bigger is better and I was the same way til recently when I made nearly 950rwhp through a 3" downpipe and a small K&N filter
I know everyone thinks bigger is better and I was the same way til recently when I made nearly 950rwhp through a 3" downpipe and a small K&N filter