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2Addicts | BMW 2-Series forum Technical Topics N55 (M235i) Engine, Transmission, Exhaust, Tuning M performance exhaust and diffuser installed. Quick video.

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      05-08-2014, 08:29 PM   #23
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Awesome diffuser! I'm quite curious about the exhaust sound in real life, can you take a video of flying by in sports mode? I really wanted to know how the performance exhaust sound outside with only 1/4 throttle or less..
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      05-08-2014, 08:49 PM   #24
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Thank you very much guys. I see that the one highlighted in blue on the drop down menu picture I posted is the one I need since I'm getting the M Performance exhaust installed at port.
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      05-15-2014, 04:56 AM   #25
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so i installed my exhaust today and maybe its because it needs to be broken in, but its not THAT much louder. some of the videos posted here u hear shit ton of pops and gargles, but while driving its hard to hear it. especially because of the wind noise. I'm sure others can hear the difference from the outside.


can you write ur feedback on how it sounds in cabin? i hear a slight drone, but its really hard to hear anything
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      05-15-2014, 05:11 AM   #26
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the pops and gargles are only on sport or sport+.
but then I`m with you, it`s not much louder then stock.
It`s a waste of money imo. There are better options.
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      05-15-2014, 05:25 AM   #27
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Quote:
Originally Posted by AnooooOH View Post
the pops and gargles are only on sport or sport+.
but then I`m with you, it`s not much louder then stock.
It`s a waste of money imo. There are better options.
yea most def. thats why i was trying to ask people to take video from further away to get more of a natural sound. people should definitely hear it in person before u buy.

even pops and gargles are only during a certain rpm (around 2-3k). Until the rpm drops you won't hear it.

but one good thing though is, even from an axle back i noticed a bit more tq and a smoother power curve. this is obviously coming from my butt dyno, but my car just doesn't seem to hesitate anymore revving up which I'm happy about.

i dont think jb4 and intake was a good combo. definitely need exhaust on top
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      05-15-2014, 12:15 PM   #28
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also it looks like u can take off the stock black tip, i still have to look into it
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      05-15-2014, 03:15 PM   #29
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So the sport and sport+ still make a difference in exhaust note just like it does stock?
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      05-15-2014, 08:20 PM   #30
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Quote:
Originally Posted by Jimmer View Post
So the sport and sport+ still make a difference in exhaust note just like it does stock?
yes. but u can to the golf tee mod which forces it to stay open without throwing a code. the only major difference is for the people outside. in cabin theres practically no difference. only way to hear it better i noticed was to open the sunroof.
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      06-01-2014, 09:42 AM   #31
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Quote:
Originally Posted by kerm1t
Quote:
Originally Posted by Jimmer View Post
So the sport and sport+ still make a difference in exhaust note just like it does stock?
yes. but u can to the golf tee mod which forces it to stay open without throwing a code. the only major difference is for the people outside. in cabin theres practically no difference. only way to hear it better i noticed was to open the sunroof.
So do you think there's an increase in hp with mp exhaust?
I'm still trying to decide.
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      06-01-2014, 01:27 PM   #32
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If the sound is what you are really after then just do muffler delete. Any exhaust shop with a welder can remove the muffler and insert a Y pipe fitted to the factory mid-pipe and weld tips to the ends. Should be 1/2 the price of a new M Performance muffler and give you that straight six race sound. Be smart and get the fitting flanged so you can un-mount the new pipe and re-mount the stock muffler as needed.
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      06-01-2014, 06:59 PM   #33
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Quote:
Originally Posted by Delnari
If the sound is what you are really after then just do muffler delete. Any exhaust shop with a welder can remove the muffler and insert a Y pipe fitted to the factory mid-pipe and weld tips to the ends. Should be 1/2 the price of a new M Performance muffler and give you that straight six race sound. Be smart and get the fitting flanged so you can un-mount the new pipe and re-mount the stock muffler as needed.
True. But it could result in too loud of a sound!
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      06-02-2014, 08:15 PM   #34
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Quote:
Originally Posted by dharo1 View Post
So do you think there's an increase in hp with mp exhaust?
I'm still trying to decide.
if not at all, then barely. i didn't notice anything major but just smoother up the RPM.

i wrote about this in another thread, but i have to take back my initial impression pre break-in. now its much louder and can hear it in cabin. i definitely like the pitch better than any other exhaust out so far.
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      06-03-2014, 03:58 AM   #35
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If you guys have through load option, try folding one of the rear seats down and go for a blast.

I have m135i (5dr hatchback version of m235i) here in UK and exhaust sound is more fruity with one or both rear seat backs flat!
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      06-07-2014, 01:23 AM   #36
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Sounds great OP, just wondering did you paint the middle part of the diffuser gloss black to match the black on the car?
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      06-08-2014, 02:50 PM   #37
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Hey OP, does the m performance exhaust comes with a valve? If so, did u disable it?
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      06-08-2014, 03:26 PM   #38
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Quote:
Originally Posted by SiuFay View Post
Hey OP, does the m performance exhaust comes with a valve? If so, did u disable it?
Yes the MPE comes with same valve as stock back box.

Disabling via golf tee mod is doable but just put the car into sport mode. Has the same effect....
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      06-13-2014, 05:31 PM   #39
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My MPE after install... this will hold me over until I do a DP!

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      06-17-2014, 12:29 PM   #40
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Quote:
Originally Posted by SiuFay View Post
Sounds great OP, just wondering did you paint the middle part of the diffuser gloss black to match the black on the car?
Would also like to know this OP
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      07-12-2014, 03:51 PM   #41
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Sounds amazing and looks just as amazing. Can't wait to do this.
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      04-01-2015, 10:53 AM   #42
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I actually quite like the stock rear over the m performance rear diffuser. So all i need is the m performance exhaust, with the carbon fibre tips.Name:  Screen Shot 2015-04-02 at 2.51.33 am.png
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I'm curious why the exhaust is cheaper with m performance diffusor vs without.....
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      05-23-2015, 01:48 PM   #43
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bump, added some new pics to the 1st post
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      05-23-2017, 11:58 PM   #44
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Will an M performance exhaust from a M235 fit on a M240?
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