resonator delete?

[goat128]

Hello! I have a question - if I delete the resonator what can I put in its place instead of straight pipes? For instance I've heard theres bullet resonators and x-pipes, will any of these help keep the noise down and provide better performance? Can they be combined in tandem?

What would the cost be like?

thanx :)

- 1994 530i -

[gviloria99]

I removed the resonator and installed straight pipe, you can barely tell the difference. It is alittle louder when taking off.

[BillionPa]

an x pipe is better for exhaust pressure equalization.

[goat128]

Thanks for the info gviloria99 and BillionPa. So a good setup would be an x-pipe, no bullet resonators? Any more info?

[gviloria99]

Don't need an x pipe, the exhaust meets up at the muffler. The x pipe only helps when installing true dual exhaust system, by that I mean you install 2 mufflers and 2 tailpipes.

[goat128]

I would then need a y-pipe to run it into a bullet resonator, run single pipe to the muffler?

I'm starting to think stock setup is best, as I've read some complaints about straight pipes - raspiness, etc. Unless theres a better solution out there.

Full aftermarket exhaust, for instance the remus, looks like it has a fairly small resonator - but the downside is the cost.

[goat128]

Ok, I got a plan

stock:
http://s28.photobucket.com/albums/c223/dskootsky/?action=view&current=stock.jpg&refPage=&imgAnch=imgAnch2

modified:
http://s28.photobucket.com/albums/c223/dskootsky/?action=view&current=modified.jpg&refPage=&imgAnch=imgAnch2

this way no y-joint will be required and I can continue to run twin pipes down to the muffler.

I'll update as more info becomes available.

[shogun]

Here is some indea from an E32, I posted earlier this year, pics
http://www.bimmerboard.com/forums/posts/175183/

[pyro]

I had a heartge exhaust put on, and it wasn't loud enough so I went ahead and had streght pipes put in instead of the resonator, no power increase but it got a litte louder and introduced a tiny bit of raspyness but it sounds good, not ricy.

EDIT
Actually listn to my dyno video

[Espen]

http://www.roadfly.com/bmw/gallery/photos/photos-06-2004/7-4762315.jpg

Would this setup fit an e34? It looks like the long straight pipes would interfeer with the left backwheel?

[scyrusurcys]

Ok, I got a plan

stock:
http://s28.photobucket.com/albums/c223/dskootsky/?action=view&current=stock.jpg&refPage=&imgAnch=imgAnch2

modified:
http://s28.photobucket.com/albums/c223/dskootsky/?action=view&current=modified.jpg&refPage=&imgAnch=imgAnch2


Your modified version looks exactly like the stock setup of the E90. Correct me if I'm wrong on this.

[goat128]

Ok I said I would update when I had the info :). I've been googling for weeks it seems.

http://www.insomniakz.com/images/random/magnaflow.jpg

Its a magnaflow universal resonator (though they call it a muffler). Here installed on an M3. Eliminates "raspyness" sound compared to straight-thru pipes. Heres the referring info:

http://www.m3forum.net/m3forum/printthread.php?t=66111&pp=40