DMH Cut Out for HHR SS
It opens your exhaust up kinda like running open headers. It gave my Fiance (lady3bGlover) 16H/P more by opening it up on the Dyno. It makes the exhaust less restrictive...
not hard to install at all..They have to cut the exhaust though. It's $200.00 from www.dmhperformance.com with a 4-year warranty
Not to get technical but on the SS it's an open downpipe. Much the same though. Also it makes the exhaust less restrictive because it bypasses the exhaust, essentially you are running an open pipe(s) with no muffler, it can get very loud, especially on a 2.8 VW. My buddy did it on his and we cruised around with it like that and we had earplugs in the whole time, it was that loud.



