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BMW Perfomance Exhaust System

Discussion in 'E90/E91/E92/E93 (2006-2011)' started by dest149, Jan 22, 2009.

    dest149 guest

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    So guys, is it really worth it? what are its pros and cons!
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    pseto

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    its not worth it IMO. its an overpriced muffler. if it was a full exhaust system, that would be a good deal
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    Jeff Gomon

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    I have not heard the BMW Performance Line exhaust. I have heard the Dinan cat-back system on the 330, the 550 and, I think, the 335. Those sound great, especially with the 550's V8. Don't know the costs of either, but I bet these were not cheap. If you were just looking for sound, perhaps the Performance Line muffler only may fit the bill.

    As an aside, we have a collector/member who takes the OE mufflers off all his new cars. I mean 328, 330, 335, 550, CTS-V, C-class AMG etc. The only one he has left alone is his new C63 AMG...that thing sounds awesome as is. Point being, he left the resonators and cats and ran a stainless pipe that took the muffler's place and kept the stock tips. All sounded great, were not too loud and had little to no cabin resonance increase at cruise speeds. There was a nice deep tone at idle and a pronounced change on full acceleration. Overall, a very subtle and tasteful change in my opinion. Plus the weight savings was huge.

    Not condoning this, but he has had no problems with any of these cars at all after doing this. It was also much cheaper than either option I mentioned above.
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    Wretched

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    I have heard a lot of nice sounding cars with a muffler delete! Just search youtube you will find a ton! I think I am ready to do this also but I have no idea where to find the pipe for the muffler delete! Does any one sell these or is it a muffle shop hack?
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    granthr

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    I have also heard of this muffler delete and have considerate for my 318i, since there are almost no options anymore for this car. Notice, I said almost, I am aware of two and I have the one. Which is as quiet as stock! :(

    I would suggest having your local independent BMW repair shop do this for you. Don't go to a hack! Unless the hack is you or a friend! :D Or if there is a dedicated independent exhaust shop in your area who specializes in custom exhausts for high end machines.

    It really is amazing how much the cat and resonator will quiet down the exhaust. My cousin has a 98 Diesel Jetta that he straight piped. Although he did it from the turbo on back. No cats anyways. Great upgrade for that car as well, as the turbo also has a muffling effect.
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    Jeff Gomon

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    +1 to what Grant said.... Find a custom exhaust shop. For a single exhaust out one side, it should be fairly easy to get a pipe bent and either welded on or slip jointed with a u-bolt fastener. As I mentioned in my earlier post, the guy that I know uses the factory tips on the straight pipe to maintain a stock like appearance. Of course, you could always have some custom tip(s) welded on that you like.

    I am leaning toward two 1/2 gallon coffee can size polished stainless tips with laser etched flames for the M5....a pair on each side. Since it currently only has single sided duals now, I will hack out the rear valance on the passenger side and mount the two nonfunctional "dummy" tips just for looks. Should look sweet, and I bet will be good for 20hp and tons of style points...:eek:
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    granthr

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    Oh come on! You should at least go for gallon can size. Old paint cans work great. Or my new favorite is the funnel. As seen on the new batch of Diesel GM trucks. Now that is an exhaust! :D
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    Wretched

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    -1000 for the soup cans! Those GM trucks with the exhaust horns what's the point? I don't get it!

    What is the closest bolt point for a muffler delete? It is before the cats on a 2006 E90?

    M3Driver guest

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    My local BMW dealer has a display of the BMW performance parts. I asked him how they were selling and his words were "they aren't"....

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