I TIG'd this together as my winter project. Its a Dynomax Superturbo muffler 2 1/4" in/out and was a muffler recommended by Moses on this forum- he has it on his 3.6 powered SC. I am running it on a 3.2--->3.4 conversion in my Carrera. I have it angled in on a Rube Golderberg bracket I welded up, mated to 1 5/8" primary Chinese headers from TRE Motorsports. I flipped the secondary tubes on the headers outboard to gain some extra bend clearance and used gasketless connections to the muffler assembly. I can drop the whole muffler and tailpipes unit in <5 minutes if need be.
The Superturbo has an excellent tone at cruise and sounds all business when you get on it without being obnoxious. It's not a commuter car exhaust- I'd say it is more track-ish or spirited drive oriented (I wouldn't want to do a 3 hour road trip with the wife) but it is the best sounding Porsche exhaust I have ever heard for $100. It has minimal drone and its all below 2k rpm with my tailpipe lengths.
I can't say what it added for power, but I definitely did not lose anything, and I sincerely believe the engine breathes easier up high around 6k rpm over the stock heat exchangers I had mated to a Fabspeed cat bypass. Sound wise it added at least 40 hp
Muffler = $110
Headers = $650 shipped from TRE
Clamps = $80
Pre-bent tubing, hardware, stainless $250
extra o2 bungs = $20
Magnaflow tips from eBay = $60
$1170 total, did all the welding myself
So far I am very pleased- one of my goals was to build heat exchanger boxes and I ran out of time- but it can be done on the right bank only if/when I get creative.
