Quote:
Originally Posted by Sliver
I think I'm just going to leave well enough alone. Valved exhaust would be cool, but not cool enough to make me want to go to a bunch of hassle.
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Honestly, the best exhaust 'mod' for these cars is to just chop the rear mufflers off and run straight pipes. Right off the bat, a great deal of sound reduction comes from the turbochargers. After that, we have our two catalytic converters per bank, which further muffles the noise. Then there are two resonators at about the mid-point of the cabin, which prevent the car from droning on the inside. The mufflers are just to get the car to 'Mercedes quiet'.
So unless you want to go through the hassle of sourcing the AMG exhaust from cats to mufflers, you can get that AMG noise on an M278 car by just ditching the rear mufflers. Car is quiet enough to drive around without being obnoxious by any stretch, and when you want to hear it, gear down and put your foot into it; you'll hear it. I've actually been told by several of my car enthusiast buddies that my exhaust is 'conservative', and that's even without considering it's a V8 putting out 550 horsepower.