Thread: Question about SD Headers.

I recently bought some SD headers and they are being shipped now. Do they come with a downpipe? Or should I go ahead and buy a downpipe with a hi flow cat already connected? I was planning on buying a magnaflow hi flow cat to throw on when I installed my headers.

It comes with a downpipe that is attached via a V-band clamp, that bolts up to your stock catback.

Originally Posted by machinegunsquid

It comes with a downpipe that is attached via a V-band clamp, that bolts up to your stock catback.

Alright thanks a lot. Would a hi flow cat be a good idea? I've got an aftermarket catback.

Depends if you have yearly inspections or not...in FL we don't so I never ran a cat. If Wisconsin does, then yeah you'll need a cat. Though with the highflows, you might still throw a code.