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      06-10-2012, 05:37 PM   #1
Voytek
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Exhaust for 2012 20i/28i ?

What options do I have for a 2012 Z4 with the N20 engine.
20i and 28i are the same with 2 small pipes on one side.

I know there is the Eisenmann quad and I would like to have quad exhaust tips but 2 on each side are great aswell. I would really like to make it a bit more noise without losing the 'pufs' coming from the exhaust when releasing the throttle.

Any tips? Also, I have the M-bumpers so how would they be installed? New diffuser or can you get it cut decently? At about 2000 USD for the 3D design diffuser I think that's pretty steep for what it is.
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      06-11-2012, 12:13 AM   #2
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IMHO, 3D design's diffuser are really expensive. And if you accidently crack it while reversing onto something, you're doomedddd!


I'm currently driving a 28i. Couldn't find any companies that makes the exhaust for the z4 with the N20 engines so i decided to go custom for the meantime.

Since it was a bolt right after that cats, decided to fabricate a bolt on straight pipe to a custom muffler box. No loss in low end as i've already tuned it up..
A little bit droney on highway drives but you can't really hear it with the top down. A lot of backfiring when downshifting.
Not really noticable in the video though hahahaa

Did quads hmm:



Sound clip of it:

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      06-11-2012, 07:00 AM   #3
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And you let them cut out the space for the 2 extra exhaust tips?

Does it look like it's supposed to be factory cut? The idea of chopping of parts of my bumper is really brrr
Scared I won't like the way it's done
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      06-17-2012, 10:45 PM   #4
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Quote:
Originally Posted by Voytek View Post
What options do I have for a 2012 Z4 with the N20 engine.
20i and 28i are the same with 2 small pipes on one side.

I know there is the Eisenmann quad and I would like to have quad exhaust tips but 2 on each side are great aswell. I would really like to make it a bit more noise without losing the 'pufs' coming from the exhaust when releasing the throttle.

Any tips? Also, I have the M-bumpers so how would they be installed? New diffuser or can you get it cut decently? At about 2000 USD for the 3D design diffuser I think that's pretty steep for what it is.
I have to totally agree with you. The two sided tail exhaust alone makes me wish i have gone with the 3.5i instead besides the lack of aftermarket tunes. I don't wish to pay 1500 for an exhaust for our cars.

^ can you tell me what brand of exhaust did you go with?
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      06-18-2012, 01:13 PM   #5
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I'm currently talking to a specialized company that is going to build me a custom inox exhaust system.
I'm taking the car to them soon so they can have a look at the bottom and how the current exhaust has been fitted.
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      06-22-2012, 07:40 AM   #6
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Quote:
Originally Posted by Voytek View Post
I'm currently talking to a specialized company that is going to build me a custom inox exhaust system.
I'm taking the car to them soon so they can have a look at the bottom and how the current exhaust has been fitted.
Will there be a loss in power? Are you going to dyno it before n after?
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      02-06-2013, 09:16 PM   #7
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Sounds madd good
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