What's the best rasp fixer for M50'd E30s?

[shiboujin]

turbos get rid of rasp very well...

http://www.youtube.com/watch?v=1-7Gej2ZYds&NR=1

[MIKe30]

anyone with raspy ebay headers try wrapping them? did it work? I REALLY dont want a raspy tone.

[daniel]

^ I think a resonator would help alot, but my first instinct would be to replace that magnaflow you have at the end with a Vibrant or Borla. From what people say, magnaflows are just plain loud.

If you don't have to pass emissions, replace the cat with a resonator and switch to a different exiting muffler.

interesting.

actually, i think the car sounds really good from behind. also, the muffler is not as loud as my old muffler, so in normal driving it is actually preferred.

this scrapy metallic sound seems to be directly related to the air traveling through the exhaust tubing itself rather than the muffler. i did some more searching last night and it seems like a resonator close to the headers would really help the raspy issue.

[lifeiskaos]

the OP eventually had a magnaflow resonator installed and it really mellowed out the sound. still raspy, but not nearly as much. he had the exact setup as you before the resonator was installed

[BenM]

^ I think a resonator would help alot, but my first instinct would be to replace that magnaflow you have at the end with a Vibrant or Borla. From what people say, magnaflows are just plain loud.

If you don't have to pass emissions, replace the cat with a resonator and switch to a different exiting muffler.

[daniel]

sorry to bump an old thread, but i have had my custom exhaust for a couple months now and, while it sounds good most of the time, is very, very raspy at high RPMs, and it hurts my ears.

headers into y-pipe into a 2.5, catalytic converter, 2.5 all the way to a magnaflow something something muffler. will it just go away? it has about 3000, if not a little more, miles on it already. i want it to stop. do i need a resonator?

edit: maybe replace the y-pipe with a y-pipe/resonator? i am assuming this exists.

[Kerrath]

Why the hell would you want to put on a glasspack?

I already gave my reason. But I'll take that as "I think you should use a standard resonator."

Anybody with M50's have some advice on what I ought to use? S50s sound badass with what I have, but mine sounds like shit. It's an M50, not S.

Also, glasspacks take less room and the reason they couldn't put one on is because they didn't have one on hand that fit, so they'd have to order one.

[nando]

Strangely, the same system sounds completely different from e36 to e30. Its odd.

could be. it also could be because the guy is a total douche and he beats the shit out of it. But it really does sound pretty awful on his particular car. I haven't heard it on another car FWIW.

[Van Westervelt]

Strangely, the same system sounds completely different from e36 to e30. Its odd.

Why the hell would you want to put on a glasspack?

[nando]

That UUC exhaust is about the best sounding I have ever heard for the S50. Wish they made e30 exhausts.

really? I have a buddy with that on his E36 M, it sounds like ass. everytime he comes over I keep expecting to see a honda civic with a park bench wing and racing stickers. ugh. and the droning on the freeway...

[e30s52]

I have the ebay ss headers, y pipe into 3in cat, then another y pipe into 2.25's, after that remus muffler. Mine isnt that raspy and not very loud.

[Kerrath]

So is there any reason I should choose a standard resonator over a glasspack or backwards of that?

[dude8383]

im running e36 from headers all the way to the back and have ZERO rasp.

obd2 headers with brand new factory cats and mid pipe running into a plain 328is catback.

it sounds great imo. i'll try to get a video up sometime.

[Eric]

e30groupie has the real deal supersprint bits. i had obd2 exhaust manis, e36m50 obd1 mid pipes and a UUC system U behind it and had zero rasp also.

does anybody have a underside pic of E36 bits fit on an E30?

[gearheadE30]

are you running 24 valve? if so the e36 parts work under the car, just change the muffler hangers in the rear. also i dont think the m20 would sound so good with that muffler. the majority of the sound is in the motor itself. if you think the UUC sounds good, listen to the clip on understeer.coms site of the stromung on a e36m3!!

Haha no I'm running 16 valve ;). The stromung is very nice, but the UUC sounds quite similar. I think the stromung is quieter, though, which is a plus in my book.

This is my current exhaust:
http://www.youtube.com/watch?v=kvhmVN-UFmk