Hey, I have Hooker 2460 Headers and plan on purchasing the the Y-Pipe to go with, They enter the Y-Pipe with a 3" Diam, and exit with a 2.5" Diam.

I am debating on if I should go with the single 2.5" pipe all the way to the muffler, Single in 2.5" Dual outlets or should I increase to a 3" Pipe back to the muffler.

I plan on putting on a Magnaflow muffler, I can get it with 2.5" Inlet and dual 2.5" outlets or 3" inlet with 2.5" dual outlets.

Is there a noticable difference in performance in the 2.5" pipe and the 3" pipe?

I am worried about clearance with the 3" pipe.

 

3" pipe has no clearance issues. if you do go with the 3" catback, i'd hack the end of the y-pipe off and put on a 3" mandrel bend in it's place...but i don't know what your fabrication skill are like. the 3" pipe does have some pretty significant power gains over the 2.5"

 

Thanks, I will go with the 3" Pipe Glad to here there is no clearance Issues How are Guys fitting True Duals under these cars? There is not a lot room.

I'm not much of a fabricator but will talk to the guy I had planed on using to finish the exhaust, see if he can build me a Y-Pipe cheaper than I can purchase the one from Hooker, or just Buy Hooker's and have him modify it for 3" Pipe.