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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 > Muffler delete



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      07-12-2011, 12:38 PM   #1
Victorae
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Muffler delete

Hey everyone,

I recently performed a muffler delete and quad exhaust conversion on my 328 e92 MT. I heard from a few people about how the muffler delete can potentially cause a loss in back-pressure, and as a result a loss in power. How true is this and realistically how much power would I be losing? Is it noticable? because I feel like I'm having a placebo effect on my mind and I feel like my car is accelerating slightly slower...but maybe it's just in my mind.

The rest of my exhaust is still intact, simply just a muffler delete
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      07-12-2011, 10:49 PM   #2
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i actually just did mine too, i have a e90 328i. In drive mode i kinda feel it low end but in M mode (manual) it feels like before.. And supposedly it increases top end a bit.. Who knows haha. What tips do you have because i'm in need of some....
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      07-13-2011, 03:40 PM   #3
Victorae
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Cyba black chrome quad tips! Love em'
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      07-14-2011, 07:12 AM   #4
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Any loss in power will be unnoticeable. Relax

If you haven't modified the exhaust enough to throw a code, you haven't done shit, other than the deeper sound of course.

How is the drone, especially on the highway?
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      07-14-2011, 12:05 PM   #5
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Not bad at all! Having a MT really makes a difference. I've heard automatic e92's with the delete done, and it's pretty unbearable. On my car, the droning gets pretty quiet especially around 80 mph (which is usually the speed I stay around during my commutes). Additionally, the quad piping really serves to mute the sound a lot
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