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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 > 06 330i muffler delete with magnaflow tip VIDEO!



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      04-26-2013, 10:58 PM   #23
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Originally Posted by EatsRainbows View Post
what tips are those? would you mind giving me a part number or a link?
thanks

Rainbow
http://forum.e46fanatics.com/showthr...590&highlight=
Could try those if you want.
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      04-30-2013, 05:22 PM   #24
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Definitely not substantial, I wouldn't think I would be able to tell before/after anyway lol. You will also shed lbs which will help with acceleration.

The AA exhaust comes with a resonator, or you can call it a "small" muffler. Not exactly a muffler delete and it is a lot tamer. Muffler delete is LOUD... inside and outside. Not sure if its appropriate for a 328i hahah.
The active exhausts have what are called helmholtz resonators which is a tube protruding from the exhaust tuned to a certain length to resonate waves opposite to certain droning frequencies. However, I've heard from all of my friends that they do not work effectively. Other than that, it is a muffler delete.
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      04-30-2013, 05:27 PM   #25
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Originally Posted by zachar3 View Post
The active exhausts have what are called helmholtz resonators which is a tube protruding from the exhaust tuned to a certain length to resonate waves opposite to certain droning frequencies. However, I've heard from all of my friends that they do not work effectively. Other than that, it is a muffler delete.
Yes, not very effective under load (2-2.5k rpm). It works a lot better than say, a muffler delete which is loud at almost every rpm range.

Also, not as loud as a muffler delete due to the resonator.
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      05-03-2013, 09:35 AM   #26
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I'm still waiting to see what tips these are. Finding good tips that don't rust out are tough- these are nice!
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      05-03-2013, 01:20 PM   #27
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I'm still waiting to see what tips these are. Finding good tips that don't rust out are tough- these are nice!
Do not get Magnaflow they turn gold
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