[For3]

I have a 2009 E92 328i with manual transmission. Ultimately I'd like to buy the Performance Exhaust. However, I keep thinking it could pretty cool / unique to have a centered exhaust.

I've seen people who have gone to a 335i dual exhaust or faux m3 quad exhaust. Just curious if anyone has done a centered exhaust with two tips a la 911 GT3 or Mini Cooper.

The issues I see are:
1)Would need to change the trunk liner to the M3/335i shallower version
2)Modify / add heat shield to M3/335i configuration
3)Modify diffuser to accept centrally located tips
4)Mounting points?
5)Which base exhaust / muffler to use?

A. Modify M3 Exhaust to use the muffler housing but reroute / delete internal pipes and input and outputs? Reason being is it fills the space visually left to right. But so much modification probably means not worth it.
B. Generic Borla or Magnaglow muffler
C. John Cooper Works muffler / exhaust.
D. Turn a PE exhaust upside down so the tips come out on the right side / instead of left.

[matteblue3er]

http://www.hardmotorsport.com/hard-m...-bmw-e90-335i/

[Torgus]

Is all of that work worth it for looks alone? That one above looks like two pea shooters. Just embrace the single exhaust you have!

[Peter944]

I actually wanted to do that. I really like center exhausts and is definitely doable. I was going to take the msport rear bumper and make a new diffuser out of fiberglass. But buying the bumper itself kinda put me off because of the price.
I suppose you could take a grinder to the trunk floor and plastic weld it if you so inclined and put heat shielding material over it.
If this was not my only car atm, i would totally do something crazy like that. Ala old 5 series just more modern

[Needbmwpartzz]

I would love to see this cleanly executed.
But not sure how I would feel about end result.

[Dan Bilzerian]

It's not a Porsche... It looks terrible and that's putting it lightly. Don't ruin your bmw

[Noir]

Originally Posted by For3

I have a 2009 E92 328i with manual transmission. Ultimately I'd like to buy the Performance Exhaust. However, I keep thinking it could pretty cool / unique to have a centered exhaust.

I've seen people who have gone to a 335i dual exhaust or faux m3 quad exhaust. Just curious if anyone has done a centered exhaust with two tips a la 911 GT3 or Mini Cooper.

The issues I see are:
1)Would need to change the trunk liner to the M3/335i shallower version
2)Modify / add heat shield to M3/335i configuration
3)Modify diffuser to accept centrally located tips
4)Mounting points?
5)Which base exhaust / muffler to use?

A. Modify M3 Exhaust to use the muffler housing but reroute / delete internal pipes and input and outputs? Reason being is it fills the space visually left to right. But so much modification probably means not worth it.
B. Generic Borla or Magnaglow muffler
C. John Cooper Works muffler / exhaust.
D. Turn a PE exhaust upside down so the tips come out on the right side / instead of left.

I bought the bin for my quad setup on my 330i, it still has a small dip in the rear of it and it might cause a little problem with how the piping will get around it. I forsee mounting it to be a pita...

[e90dum]

I actually really like the position stock. You'd have an ugly hole where it's supposed to go in the bumper too






Whatever happens don't forget to post pics!!!

[Ali-E90]

In for pics

[For3]

Originally Posted by matteblue3er

http://www.hardmotorsport.com/hard-m...-bmw-e90-335i/

Thank you! I went down a rabbit hole on that site.

Originally Posted by Peter944

I actually wanted to do that. I really like center exhausts and is definitely doable. I was going to take the msport rear bumper and make a new diffuser out of fiberglass. But buying the bumper itself kinda put me off because of the price.
I suppose you could take a grinder to the trunk floor and plastic weld it if you so inclined and put heat shielding material over it.
If this was not my only car atm, i would totally do something crazy like that. Ala old 5 series just more modern

I have a the M Sport bumper so it would be a matter of changing the "diffuser insert". It would have to be custom. One thought I had was taking the stock insert and wrapping it in real carbon fiber to match the performance spoiler and using this multi layer wrap to cover the existing cut out on the left and put in a new central cut out prior to wrapping.

Originally Posted by Needbmwpartzz

I would love to see this cleanly executed.
But not sure how I would feel about end result.

I think it could be pretty cool.

Originally Posted by Dan Bilzerian

It's not a Porsche... It looks terrible and that's putting it lightly. Don't ruin your bmw

I think that is a little harsh. Cleanly executed it could look good IMO. It's not a porsche and never will be but it's also not a ferrari or anything worth a lot of money dissuading someone to never changing it from stock. I really like seeing what the porsche guys are doing with back dating their cars and adding the trim to make it look like a 70s RS or adding pea shooters, etc. Whatever makes you happy works for me. I understand your point don't get me wrong. But I wouldn't ever do this (and still might not) unless it could be done right. And if so I doubt it will "ruin" the car.

Originally Posted by e90dum

I actually really like the position stock. You'd have an ugly hole where it's supposed to go in the bumper too

Whatever happens don't forget to post pics!!!

The stock position does have it's charm. I agree with your sentiment about the ugly hole, but I also look at this 240Z and love the new centered exhaust and how the owner left the stock hole or the original single exhaust intact.

https://www.youtube.com/watch?v=EO2y_-vpolA&t=52s

Originally Posted by Ali-323i

In for pics

Will do but don't hold your breath. I just got the car and for me I have the next several years of mods laid out some of which might never happen. Apex wheels, 3 stage intake manifold, tune, AT rear differential (final drive ratio change), supsension, and exhaust.

But to me the exhaust is the one that could be the most unique and intriguing project.

[Noir]

Don't be discouraged...
I got some quad tips on my 330i.
I love it.
I know its no M.

[Ali-E90]

Originally Posted by Noir

Don't be discouraged...
I got some quad tips on my 330i.
I love it.
I know its no M.

Pics? I'm debating quads down the line, but some of the ones I've seen look too spaced out for me.

[Noir]

Originally Posted by Ali-323i

Pics? I'm debating quads down the line, but some of the ones I've seen look too spaced out for me.

Well I'm on mobile, and I lost my imgur info-
So check out the sound check: