I was just wondering i have a hks downpipe. and now in the works of buying a greddy ti-c exhaust system. but since i have the hks downpipe am i going to have to remove it to put the greddy exhaust system or is it gonna attach to my hks downpipe
It depends what kind of system your buying. A catback system does not come with a downpipe, just a catback exhaust. On the other hand, a turbo back system does come with both a downpipe and catback exhaust. Most aftermarket downpipes and catback exhausts do match up so you shouldn't have a problem with that.
Usually the down pipe is an extra cost item. It is not included with a cat back system.
