Muffler delete

Victorae · 07-12-2011, 01:38 PM

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

milly · 07-12-2011, 11:49 PM

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....

Victorae · 07-13-2011, 04:40 PM

Cyba black chrome quad tips! Love em'

darkrom · 07-14-2011, 08:12 AM

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?

Victorae · 07-14-2011, 01:05 PM

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

07-12-2011, 01:38 PM	#1
Victorae Lieutenant 21 Rep 549 Posts Drives: 2014 F32 \| 2014 Tesla Model S Join Date: Nov 2010 Location: SoCal iTrader: (1)	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, 11:49 PM	#2
milly Captain 83 Rep 783 Posts Drives: 328i Join Date: Dec 2010 Location: Charleston, SC iTrader: (3) Garage List 2008 328i (e90) [9.00]	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.... __________________ Black 2008 328i e90-BMW Performance CF Strut Bar/Muffler delete/8000k Fogs Fogs/Trunk Spoiler/5% Tint/BlueTooth/JVC HU/AG M359 Wheels/Matte Black kidney grills/H&R Race Springs/Koni Yellows/Orion V2 Angel Eyes/EuroCharged Tune/
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07-13-2011, 04:40 PM	#3
Victorae Lieutenant 21 Rep 549 Posts Drives: 2014 F32 \| 2014 Tesla Model S Join Date: Nov 2010 Location: SoCal iTrader: (1)	Cyba black chrome quad tips! Love em'
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07-14-2011, 08:12 AM	#4
darkrom Colonel 242 Rep 2,348 Posts Drives: 135i Join Date: Feb 2011 Location: Rhode Island iTrader: (5)	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, 01:05 PM	#5
Victorae Lieutenant 21 Rep 549 Posts Drives: 2014 F32 \| 2014 Tesla Model S Join Date: Nov 2010 Location: SoCal iTrader: (1)	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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