Paul S.

Alright I am finally catching up on all the bills and the truck needs exhaust (the flex is torn pretty bad). So I should be able to convince the wife that it all should go.

I am looking at the rip rook 4" down pipe connecting to a new 4" pipe around the transfer then to my single stack, I am wondering 2 things;
How much if any performance gain will I see?
When (not if) I move to a different housing will there be any mods needed to that exhaust at that point?

Thoughts...

mhuppertz

You will gain a performance edge at higher flow rates, but I don't know how much because you have a stack already....

As for the second part, if you stick with the H1C the housings will all have the same output flange. The only issue you might have is going to a wategated housing because they are a bit longer. I hear a little persuasion on the firewall takes care of it though!

Underpsi

Not so much of a STP feeling perforamnce wise but it will allow you to keep the power without letting your foot out because it will help cool egts