Muffler Question
But if you're shopping on eBay, and want a 4" system with a 'straight through' muffler, look for auctions by Warp Speed Performance, or WSP. They have complete 4" systems for $299. The kits include all the pipes (w/ attached hangers), muffler, the needed clamps, and a tip. And while most don't advocate placing a pyrometer post turbo, their downpipe is already tapped and has a mounting lug (with a plug) for a pyrometer.


