M Performance Exhaust / Rear Diffuser Review

bbbenwilliamson · 04-09-2015, 06:25 PM

Figured I would post this here because videos are really hard to come by when exhaust shopping.

The video is in comfort mode, not cold, with a JB4 and BMS intake installed. The cats are still on the car and the down pipe is stock (for now). I think the sound is excellent off cold starts. Lots of gurgling, popping, cracking on cold revs etc. When it warms up, its almost silent. It is no louder than the stock exhaust when driving. If there is any difference, I can't hear it. If anything, I just hear the intake more. There MIGHT be slight difference in first and second gear but meh. Not loud at all.

The rear diffuser looks so awesome on a white car when you leave it black. I test fitted the front M diffuser and will be painting it white / black. I hate the all black look with those big huge sides.

The install was very easy for the exhaust and diffuser. In total it probably took me an hour or two. Included is a picture so you can see where I cut the exhaust. In conclusion - This is not loud enough for me, and I will be removing the resonator and adding a downpipe within the next couple weeks.

den525 · 04-09-2015, 09:04 PM

Thanks for that... Am also looking at exhaust options...

This was exactly what I feared about the m performance exhaust is that it's not loud enough...

I think partly it's due to great sound insulation as well...

bimmercar · 04-09-2015, 10:45 PM

wouldn't get it louder as it breaks in?

bbbenwilliamson · 04-09-2015, 11:32 PM

Quote:

Originally Posted by den525

Thanks for that... Am also looking at exhaust options...

This was exactly what I feared about the m performance exhaust is that it's not loud enough...

I think partly it's due to great sound insulation as well...

I agree - ill update this thread when I cut out the resonator, and ill update it again when I have the down pipe.

bbbenwilliamson · 04-09-2015, 11:33 PM

Quote:

Originally Posted by bimmercar

wouldn't get it louder as it breaks in?

Yes, they will usually get 'louder' but nowhere near what I'm looking for. Im not complaining at all, the sound is better for sure. Just not loud.

New Fish · 05-18-2015, 10:24 PM

Hi~~! Does the diffuser come with the MPE?

ocN55 · 05-19-2015, 04:28 AM

Quote:

Originally Posted by New Fish

Hi~~! Does the diffuser come with the MPE?

It does not, they are separate.

There are 2 part #s for the MPE. One is to pair with the stock diffuser and the other is to pair with the MP Diffusor. You cannot have the MP diffusor without the MPE, it will look weird. You would have to either modify your stock exhaust or just get the MPE to pair with the diffusor.

xtlwulf · 05-19-2015, 08:47 AM

thanks for the review!

alz0rz · 05-19-2015, 09:26 AM

The MPE is definitely louder and sounds great outside the car, inside however, you will be hard pressed to tell the difference.

J-Sud · 05-19-2015, 09:45 AM

Quote:

Originally Posted by alz0rz

The MPE is definitely louder and sounds great outside the car, inside however, you will be hard pressed to tell the difference.

+1

Unless you are in a parking garage! Only time I really hear mine in the car.

New Fish · 05-19-2015, 08:15 PM

Quote:

Originally Posted by ocN55

It does not, they are separate.

There are 2 part #s for the MPE. One is to pair with the stock diffuser and the other is to pair with the MP Diffusor. You cannot have the MP diffusor without the MPE, it will look weird. You would have to either modify your stock exhaust or just get the MPE to pair with the diffusor.

I just bought M235i last week, with the MPE,i just wondering is the diffuser come with it? Thank You~!

stroids88 · 05-20-2015, 03:22 PM

I also just installed the MP diffuser for my M235ix. My MPE tips do not stick out very far with the new diffuser and I'm wondering if there might be any heat issues warping diffuser if anyone knows?

New Fish · 05-20-2015, 08:09 PM

Quote:

Originally Posted by stroids88

I also just installed the MP diffuser for my M235ix. My MPE tips do not stick out very far with the new diffuser and I'm wondering if there might be any heat issues warping diffuser if anyone knows?

Where did u buy that diffuser? BMW or ebay something?

stroids88 · 05-20-2015, 08:14 PM

OEM BMW.
MPE is for stock style diffuser. I know OEM has 2 part numbers for MPE. One for cars with stock diffusers and one for MP Diffusers. I'm wondering if anyone knows if it looks or function to have extended tail pipes.

Buckeyes · 05-20-2015, 10:07 PM

The mpe tips are adjustable. Just move them back

BMWZ4 · 05-21-2015, 06:56 AM

BMW also sells extenders. I bought a pair for $75. Easy install, just 15 mins or thereabouts. Stick out much further now.

silvrevo · 05-21-2015, 10:51 AM

Didnt anyone notice this is a right hand drive 235

with Wisconsin plates?

Whats that story

alz0rz · 05-21-2015, 11:09 AM

Quote:

Originally Posted by silvrevo

Didnt anyone notice this is a right hand drive 235

with Wisconsin plates?

Whats that story

Autobot · 05-22-2015, 04:53 PM

Did you find that the exhaust pipe cutter that you used worked well?

Turbo_435i · 05-23-2015, 11:40 AM

Quote:

Originally Posted by silvrevo

Didnt anyone notice this is a right hand drive 235

with Wisconsin plates?

Whats that story

wtf ,lol

BMWZ4 · 05-26-2015, 12:37 PM

Maybe the image got reversed when it was uploaded...!?

MrBucket · 05-26-2015, 02:49 PM

Quote:

Originally Posted by ocN55

It does not, they are separate.

There are 2 part #s for the MPE. One is to pair with the stock diffuser and the other is to pair with the MP Diffusor. You cannot have the MP diffusor without the MPE, it will look weird. You would have to either modify your stock exhaust or just get the MPE to pair with the diffusor.

They sell extensions to use on the exhaust to fit the tips of a stock exhaust or normal diffuser M performance with the diffuser.

04-09-2015, 06:25 PM	#1
bbbenwilliamson Private 25 Rep 57 Posts Drives: 2015 M235i Join Date: Mar 2015 Location: Midwest iTrader: (0)	M Performance Exhaust / Rear Diffuser Review Figured I would post this here because videos are really hard to come by when exhaust shopping. The video is in comfort mode, not cold, with a JB4 and BMS intake installed. The cats are still on the car and the down pipe is stock (for now). I think the sound is excellent off cold starts. Lots of gurgling, popping, cracking on cold revs etc. When it warms up, its almost silent. It is no louder than the stock exhaust when driving. If there is any difference, I can't hear it. If anything, I just hear the intake more. There MIGHT be slight difference in first and second gear but meh. Not loud at all. The rear diffuser looks so awesome on a white car when you leave it black. I test fitted the front M diffuser and will be painting it white / black. I hate the all black look with those big huge sides. The install was very easy for the exhaust and diffuser. In total it probably took me an hour or two. Included is a picture so you can see where I cut the exhaust. In conclusion - This is not loud enough for me, and I will be removing the resonator and adding a downpipe within the next couple weeks. __________________ Ben Williamson I'm a fitness, business, and car lover from the midwest. Instagram \| Twitter \| Email
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04-09-2015, 09:04 PM	#2
den525 Captain 185 Rep 869 Posts Drives: BMW M235i Join Date: Jan 2015 Location: Sydney iTrader: (0)	Thanks for that... Am also looking at exhaust options... This was exactly what I feared about the m performance exhaust is that it's not loud enough... I think partly it's due to great sound insulation as well... __________________ My car build http://www.2addicts.com/forums/showthread.php?t=1094247
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04-09-2015, 10:45 PM	#3
bimmercar Captain 182 Rep 765 Posts Drives: 340xi Join Date: Oct 2014 Location: Northeast US iTrader: (0)	wouldn't get it louder as it breaks in?
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05-18-2015, 10:24 PM	#6
New Fish New Member 0 Rep 6 Posts Drives: M235i Join Date: Apr 2015 Location: Canada iTrader: (0)	Hi~~! Does the diffuser come with the MPE?
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05-19-2015, 08:47 AM	#8
xtlwulf Private First Class 29 Rep 135 Posts Drives: 2013 335xi \| 2015 228xi Join Date: Nov 2006 Location: New York iTrader: (0)	thanks for the review!
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05-19-2015, 09:26 AM	#9
alz0rz What goes here? 450 Rep 1,356 Posts Drives: 2019 G30 M550i Join Date: Aug 2011 Location: Florida Space Coast iTrader: (4) Garage List 2019 BMW M550i [0.00] 2021 BMW M3 Competi ... [0.00] 2019 BMW M5 Competi ... [0.00] 2016 BMW M3 [0.00] 2014 BMW M235i [0.00]	The MPE is definitely louder and sounds great outside the car, inside however, you will be hard pressed to tell the difference. __________________ 2019 G30 M550i GBNF: 2021 G80 M3, 2019 F90 M5 Competition, 2016 F80 M3, 2014 F22 M235i
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05-20-2015, 03:22 PM	#12
stroids88 Second Lieutenant 147 Rep 213 Posts Drives: 2015 Frozen Black ///M3 Join Date: Mar 2015 Location: Carlsbad, CA iTrader: (0)	I also just installed the MP diffuser for my M235ix. My MPE tips do not stick out very far with the new diffuser and I'm wondering if there might be any heat issues warping diffuser if anyone knows? Attached Images
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05-20-2015, 08:14 PM	#14
stroids88 Second Lieutenant 147 Rep 213 Posts Drives: 2015 Frozen Black ///M3 Join Date: Mar 2015 Location: Carlsbad, CA iTrader: (0)	OEM BMW. MPE is for stock style diffuser. I know OEM has 2 part numbers for MPE. One for cars with stock diffusers and one for MP Diffusers. I'm wondering if anyone knows if it looks or function to have extended tail pipes.
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05-20-2015, 10:07 PM	#15
Buckeyes Captain 353 Rep 939 Posts Drives: 2013 335i M Sport Join Date: Jan 2013 Location: Atlanta iTrader: (2)	The mpe tips are adjustable. Just move them back
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05-21-2015, 06:56 AM	#16
BMWZ4 Major General 1908 Rep 5,102 Posts Drives: '23 X1/'23 Allroad Progressiv Join Date: Apr 2010 Location: Toronto iTrader: (1)	BMW also sells extenders. I bought a pair for $75. Easy install, just 15 mins or thereabouts. Stick out much further now. __________________ '11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
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05-21-2015, 10:51 AM	#17
silvrevo Captain 40 Rep 660 Posts Drives: M235v 6spd Join Date: Jul 2006 Location: Location: Location iTrader: (1)	Didnt anyone notice this is a right hand drive 235 with Wisconsin plates? Whats that story
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05-22-2015, 04:53 PM	#19
Autobot Brigadier General 83 Rep 3,106 Posts Drives: 15 F22 M235 6MT Join Date: Feb 2007 Location: Charleston, SC iTrader: (8)	Did you find that the exhaust pipe cutter that you used worked well? __________________ Delivered 28 May
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05-26-2015, 12:37 PM	#21
BMWZ4 Major General 1908 Rep 5,102 Posts Drives: '23 X1/'23 Allroad Progressiv Join Date: Apr 2010 Location: Toronto iTrader: (1)	Maybe the image got reversed when it was uploaded...!? __________________ '11 Z4 30i (retired);'11 X3 28i (retired); '15 M235i Stage 1 Dinan (recalled & crushed); '16 M235i Stage 3 Dinan (retired); '15 X3 28i (retired); '14 328i (retired), 2019 X3M40i (retired); Loaded '18 X1 (retired); Loaded '20 X3MC DG, Black/Tan Merino (retired); Loaded '23 X1 Cape York green and Red/Black interior; '23 Audi A4 Allroad Progressiv
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