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      04-30-2012, 09:57 AM   #23
Mr.MichaelM3
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HOW MUCH DID YOU PAY!?? LOL OEM M3 Exhausts on EBay at Morristown BMW sells em for under $3500
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      04-30-2012, 10:10 AM   #24
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Quote:
Originally Posted by KJ View Post
The "Straight Through" exhaust mod doesn't cross through the muffler. They cut the pipes and have each side go straight through and bypass the muffler.

The other exhaust mod changes the perforated pipes inside the muffler with solid pipes and still crosses over.

There are 2 different types of exhaust mods.

I suspect the routing of the piping is the same for the "straight through" exhaust mod and the M3 Performance exhaust, but the M3 Performance exhaust probably uses perforated pipes inside to allow sound deadening material inside the muffler to do it's work so it won't drone as much.

- KJ
I believe the different materials used for the two exhausts also contribute to give a different acoustic resonance to the systems (iconel, titanium, thinner walls, etc..)

Last edited by CanAutM3; 04-30-2012 at 10:54 AM.
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      04-30-2012, 10:14 AM   #25
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The Performance Exhaust is excellent in my opinion.
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      04-30-2012, 10:51 AM   #26
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Eight months and several thousand miles on my exhaust. Couldn't be happier. Sound is great, no drone and if you're looking for exotic materials, it's about as exotic as they come, (inconel and titanium). Materials are biggest contributor to price. Nice thing is it is covered under your vehicle warranty, basic and extended. You can always find it cheaper if you look hard, but in the end, your personal satisfaction with your choice is the value marker regardless of the price you paid.

If you come to a freeway on-ramp with some Jersey Wall next to it, don't forget to roll down your window. I guarantee you'll want to get off the freeway and back on again just for the sound.

Enjoy.
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      04-30-2012, 10:53 AM   #27
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Quote:
Originally Posted by flagger View Post
Eight months and several thousand miles on my exhaust. Couldn't be happier. Sound is great, no drone and if you're looking for exotic materials, it's about as exotic as they come, (inconel and titanium). Materials are biggest contributor to price. Nice thing is it is covered under your vehicle warranty, basic and extended. You can always find it cheaper if you look hard, but in the end, your personal satisfaction with your choice is the value marker regardless of the price you paid.

If you come to a freeway on-ramp with some Jersey Wall next to it, don't forget to roll down your window. I guarantee you'll want to get off the freeway and back on again just for the sound.

Enjoy.
Fully agree
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