E36 328i Dual Exhaust Pipes

[musclehedz]

Hi guys,

anyone of you here modified your rear back mufflers to have dual, like the M5(left and right side exhaust pipes)? If yes, how did you do it?

Thanks.

[Nick325xiT 5spd]

Why the **** would you do something as lame and stupid as that?

[musclehedz]

Why the **** would you do something as lame and stupid as that?

Looks nice.

[Nick325xiT 5spd]

Looks nice.
Don't.

[obmd1]

wouldn't he (theoretically, even though there are better ways of doing it) pick up HP be relieving back pressure?

I dunno... I no mod cars...I drive em... :dunno:

[Nick325xiT 5spd]

wouldn't he (theoretically, even though there are better ways of doing it) pick up HP be relieving back pressure?

I dunno... I no mod cars...I drive em... :dunno:
No. What he would do is add a ****load of weight for no gain. The exhaust on the E46 M3 is a classic example of this.

[obmd1]

No. What he would do is add a ****load of weight for no gain. The exhaust on the E46 M3 is a classic example of this.
so (seriously) there is no gain for dual exhausts except looking kinda cool? :confused:

[Nick325xiT 5spd]

so (seriously) there is no gain for dual exhausts except looking kinda cool? :confused:
The E39 M5 has two separate exhausts running down either side of the car. It makes sense there (although the four tips are still silly). On the other hand, the E46 M3 has the EXACT SAME layout as any other 3'er, except that it has a massive coffin under the bumper with four tips attached.

[musclehedz]

Ok, idead scrapped :thumbdwn:

[obmd1]

The E39 M5 has two separate exhausts running down either side of the car. It makes sense there (although the four tips are still silly). On the other hand, the E46 M3 has the EXACT SAME layout as any other 3'er, except that it has a massive coffin under the bumper with four tips attached.

aCHA.... thanks Nick. :thumbup:

[BeRzErKaS]

I've never seen an e36 with a true dual exhaust system (2 sets of mids/2 mufflers) but the quad tip look has been done several times in various ways. I agree that it's pretty impractical and there are virtually no performance gains over a regular aftermarket cat-back. The main advantages are a more aggressive look and a ferocious ROAR at WOT.

I know Eisenmann used to make a quad exhaust for e36 that looped around the spare tire well. I have no idea if they are still in production:

[Nick325xiT 5spd]

I've never seen an e36 with a true dual exhaust system (2 sets of mids/2 mufflers) but the quad tip look has been done several times in various ways. I agree that it's pretty impractical and there are virtually no performance gains over a regular aftermarket cat-back. The main advantages are a more aggressive look and a ferocious ROAR at WOT.

I know Eisenmann used to make a quad exhaust for e36 that looped around the spare tire well. I have no idea if they are still in production:
Any theoretical performance gain with the quad pipes is less than the performance gain you'd get with a high flow two pipe muffler. More importantly, you would save a LOT of weight.

[BeRzErKaS]

Any theoretical performance gain with the quad pipes is less than the performance gain you'd get with a high flow two pipe muffler. More importantly, you would save a LOT of weight.


My main problem with the Eisenmann system above is that they don't appear to use mandrel bends to supply the secondary outlets. If the pipes were bent properly I don't see why a little more tubing post-muffler would decrease gains. At that point exhaust velocity is just about as slow as it's going to get.

I was looking through my picture archive and noticed jonsibal is running a quad dtm setup on his turbo 325. Unfortunately, I don't have an undercarriage shot of his setup. I would love to see how it's done:

*edit* whoops! pix too big to attach!

http://uploader.ws/upload/200508/Quad1_jonsibal.jpg
http://uploader.ws/upload/200508/Quad2_jonsibal.jpg

[Nick325xiT 5spd]

My main problem with the Eisenmann system above is that they don't appear to use mandrel bends to supply the secondary outlets. If the pipes were bent properly I don't see why a little more tubing post-muffler would decrease gains. At that point exhaust velocity is just about as slow as it's going to get.

I was looking through my picture archive and noticed jonsibal is running a quad dtm setup on his turbo 325. Unfortunately, I don't have an undercarriage shot of his setup. I would love to see how it's done:

*edit* whoops! pix too big to attach!

http://uploader.ws/upload/200508/Quad1_jonsibal.jpg
http://uploader.ws/upload/200508/Quad2_jonsibal.jpg
There's no justifiable reason for a dual side exhaust on an inline six engine. I'll let you figure out why it's a stupid idea.

[Oomer]

Damn, that guy has an aggressive set up...and those quads...very evil looking...whether functional or not...

[jcy0001]

hi, did you guys ever find how to do the quad exhausts? I know theres no perfomance gains and it makes the car hevier but i love the way they look:) i dont have anywhere in out city go drive fast anyway if anyone has figured out how id love to have a go at it:) thanks