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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > NA Engine (non-turbo) / Drivetrain / Exhaust Modifications > Universal Mufflers/Resonators?



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      02-16-2021, 01:13 PM   #1
Papa Popov
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Universal Mufflers/Resonators?

Had a muffler delete on my 128i for about a year now and for the price, its great. However, I'd like to quite things down a bit and kill the drone from 2.5-2.8k. Been thinking about having something like a Borla XS or a Vibrant bottle-style resonator put any. Does anyone have experience with a setup like this? If so, how does it compare to a straight muffler delete?
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      02-25-2021, 11:31 PM   #2
Leanped
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I used to have just a muffler delete, but I eventually went step by step to straight pipe, so I know what every combination sounds like.

To answer your question, I recommend a Vibrant resonator or maybe even a larger one because I know exactly how that 2.8k drone is. Also, I don't know how illegal you want to go, but catless headers are great. Keep your secondary cats and please please add a resonator if you go full straight pipe.

With a good resonator, I think a full straight pipe is the best sound. Hope this helps.
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      02-26-2021, 07:29 AM   #3
Papa Popov
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Quote:
Originally Posted by Leanped View Post
I used to have just a muffler delete, but I eventually went step by step to straight pipe, so I know what every combination sounds like.

To answer your question, I recommend a Vibrant resonator or maybe even a larger one because I know exactly how that 2.8k drone is. Also, I don't know how illegal you want to go, but catless headers are great. Keep your secondary cats and please please add a resonator if you go full straight pipe.

With a good resonator, I think a full straight pipe is the best sound. Hope this helps.
Thanks for the input!

Not looking to do headers or remove any other exhaust components in the foreseeable future. The muffler delete is just a tad too much for me, so I figured a resonator would tone it done a bit. If a resonator would quiet the car done 10-20% and axe the drone while retaining those subtle but satisfying burbles I'd be one happy dude.

Did you go with the quiet, standard/bottle, or race? How did it affect the sound, drone, and burbles?
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