AMD 3" Catback Exhaust // 10.22.2013
Finally went for the whole catback. I'd been hesitating since the start, as I wanted to stay fairly low key. After hearing Dave's monster for a few months, I just couldn't resist anymore as I had been wanting to hear a bit more from the car. So....I did a 180 and ended up with one of the loudest exhausts out there, and IMO one of the best, unique sounding on an RS4.
3" front to back with X
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Donny hard at work
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AMD did testing on a 2.5" version prior to me coming there, testing power (and sound) of an X-pipe vs H-pipe, vs running straight back. Although it was anticipated that H-pipe would provide best power, it turned out that X won in both power and sound. Mufflers? Magnaflow.
Here's a quick vid of it at start up with a few short revs.
Here's a quick vid of it at start up with a few short revs.
After having it on for a few weeks, I had some fun and did a pull from 2nd through 3rd. Recorded on phone with no external mic, I cracked the back windows a bit to let some of the sound in. The end part of the tunnel is a blast, but the sound in the video doesn't quite do it justice ;) I might try an external mic to see if I can capture it.
I logged the run, too, starting at 2,000 rpm in 2nd and going through 3rd. Looks pretty normal.
External mic recording // 01.02.2014
Finally, I got an external mic and put it on the bumper to see what it sounds like from the outside. Had some traction issues in 2nd, but you get a sense of what it sounds like cruising and under throttle. Personally - I'm in love with the sound. I think it's vicious in all the right ways, and mirrors its performance well.
Final exhaust tips installed //
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Finally got the exhaust tips installed. AMD sourced these and as they didn't have just the finish I wanted, sent them away for ceramic coating prior to installing. They're the same width as stock, but about 1/2 longer in height (4.25" vs 3.75"), which actually makes a pretty big difference visually in terms of filling out that rear valence. I'm very happy with 'em.
Below pics aren't greatest at showing true height due to angle of tips, but measurements given are accurate.
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Freshly back from getting ceramic coated
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Not the best angle for comparison, but you get the gist. Custom fills out valence much better.
