As purchased, my Cup replica had a 3" exhaust (straight pipe as it is a track-only car). It is LOUD. Very. Loud. Had to take it down a notch...
One of my goals is to move it back to the street, and that will take some pulling it back from the edge of full-race mode. Eventually, a high-flow catalytic converter, lightweight carpet, among a massive laundry list of items will help bring this back to be (somewhat) comfortable on the street. Think more GT3... think 944 Turbo Cup "reimagined".
I am already around very loud noises all day, every day. To tone her down a bit, I researched, researched, and researched mufflers for the Cup which would not completely kill the deep sound or end up sounding like a Civic. I reached back to my college days, where one of my close friends built his LT1 Camaro into a monster, and opted for Spintech. I have watched Spintech over the years grow into quite a successful exhaust company (subsidiary of a larger metalworks company). I decided to finally (after first finding them in 2003, FOURTEEN YEARS AGO) go with Spintech!
I just received my new Sportsman 3000XL in the mail. I had to remove about 3 inches of the exhaust pipe towards the rear, but other than that the install was pretty easy. The exhaust was fitted together with heavy torque clamps. but I still managed to break one lose. One replacement on the way.
Here is a video of the Spintech Sportsman 3000XL on the 2.5L 944 Turbo Cup. As always, cell phone video sound is not the best representation of actual sound, but it's pretty good.
I am a husband, father, and Porsche fan. I spent my childhood in Germany and became fond of Porsche at a young age.