Finally got rid of rasp
Thread Starter
TECH Fanatic
Joined: Jun 2003
Posts: 1,869
Likes: 99
Finally got rid of rasp I finally got rid of rasp.
Before mod:
ARH 1 7/8 long tubes with catted ARH merged y pipe back to a Magnaflow stainless catback.
For me way too loud with terrible rasp between 1800 and 3000 rpm.
I welded on two Magnaflow 2 1/2 inlet and outlet mufflers to the existing 2 1/2 magnaflow exhaust pipes. I also welded on two Magnaflow stainless slashed extensions.
For me the car is the best it has ever sounded and rasp is gone completely. I don't wake up the neighbors now on cold starts.
Note: this muffler is straight through with perforations (almost identical on the inside as Dynomax bullets).
http://www.flickr.com/photos/1835930...7602956888623/
http://www.flickr.com/photos/1835930...7602956888623/
http://www.flickr.com/photos/1835930...7602956888623/
http://www.flickr.com/photos/1835930...7602956888623/
Before mod:
ARH 1 7/8 long tubes with catted ARH merged y pipe back to a Magnaflow stainless catback.
For me way too loud with terrible rasp between 1800 and 3000 rpm.
I welded on two Magnaflow 2 1/2 inlet and outlet mufflers to the existing 2 1/2 magnaflow exhaust pipes. I also welded on two Magnaflow stainless slashed extensions.
For me the car is the best it has ever sounded and rasp is gone completely. I don't wake up the neighbors now on cold starts.
Note: this muffler is straight through with perforations (almost identical on the inside as Dynomax bullets).
http://www.flickr.com/photos/1835930...7602956888623/
http://www.flickr.com/photos/1835930...7602956888623/
http://www.flickr.com/photos/1835930...7602956888623/
http://www.flickr.com/photos/1835930...7602956888623/
Thread Starter
TECH Fanatic
Joined: Jun 2003
Posts: 1,869
Likes: 99
Note: I had purchased two Dynomax bullets but wasn't sure if they would be quiet enough even though they look identical to the insides of the Magnaflows.
But they aren't stainless like the Magnaflows so opted to try the Magnaflow instead since the Magnaflow stainless extensions matched up perfectly at the weld point. He did not have the dual Magnaflow Corsa type outlets in stock so opted again for the single outlet style.
These are 18 inch. A 14 might be a little bit louder.
Thread Starter
TECH Fanatic
Joined: Jun 2003
Posts: 1,869
Likes: 99
Did the ARH cats get rid of rasp? Not at all. The rasp actually got worse after installing the ARH cats and ARH lts compared to the JetHots lts with no cats.
So to try to get of rasp, I added the 2 Magnaflow 18 inchers aft of the Magnaflow.
Sequence:
Jet Hot lts and non-catted ory + Borla catback - terrible rasp.
Jet Hot lts and non-catted ory + Magnaflow catback - rasp but not as bad as Borla.
ARH lts with catted ory + Magnaflow catback - rasp worse than Jethots
ARH lts with catted ory + Magnaflow catback with Magnaflow bullets - no rasp.
Note:
The Dynamax bullets I have would probably have gotten rid of the rasp too - but not stainless.
No offense to ARH at all - high quality and fitment for sure.
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I'm not sure, but I think your just covering up the rasp instead of getting rid of it. From what most on here say, is that the merge at the Y is the cause of the rasp, or at least most of it. Something like the Flowmaster merge usually gets rid of it. Thats why it got worse when you went the the ARH. The merge is different from the Jethots.
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Joined: Nov 2003
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From: MD
I'm not sure, but I think your just covering up the rasp instead of getting rid of it. From what most on here say, is that the merge at the Y is the cause of the rasp, or at least most of it. Something like the Flowmaster merge usually gets rid of it. Thats why it got worse when you went the the ARH. The merge is different from the Jethots.
Yep. When I got my custom y done with Jet Hot LT's and Magnaflow exhaust my rasp went away. Car sounded a lot different.
twitchtwice just put lpp 1 3/4 lt and tsp(i think) catted y pipe+ magnaflow catback on his car, and i think it sounds perfect maybe its the 1 7/8 Lts you have thats giving it so much rasp? idk but here are his videos
http://www.youtube.com/watch?v=cuWEGKC9Ihk
http://www.youtube.com/watch?v=USF_oB7rAUA
http://www.youtube.com/watch?v=hV1Q1ckoFBg
http://www.youtube.com/watch?v=cuWEGKC9Ihk
http://www.youtube.com/watch?v=USF_oB7rAUA
http://www.youtube.com/watch?v=hV1Q1ckoFBg
Dude this is crazy. I have the exact same exhaust set up as the op had (1-7/8 arh w/ catted y and magnaflow cb) and I have zero rasp and am very quiet ! I have h/c too ! Now i used to have 1-3/4 hookers w/ ory and it was way louder with wicked *** rasp at around 2k.
Duh...cats versus no cats.
I'm not sure, but I think your just covering up the rasp instead of getting rid of it. From what most on here say, is that the merge at the Y is the cause of the rasp, or at least most of it. Something like the Flowmaster merge usually gets rid of it. Thats why it got worse when you went the the ARH. The merge is different from the Jethots.
The rasp and machine guns sound is caused by where the two pipes converge. These additional two mufflers are just better able to mask it.
When I went TD's, all that crap was totally gone.
However, in general, most guys with f-bodies, LT's, ORY and no cats do complain about rasp.
]BAD2000TA Quote:
Originally Posted by zank28
[
No **** sherlock ! What I'm sayin is that i had the exact same set up as the op claimed to be raspy. I got cats to get rid of the rasp. He said went he went from having no cats to cats it got worse.
Finally got rid of rasp
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PHP]Dude this is crazy. I have the exact same exhaust set up as the op had (1-7/8 arh w/ catted y and magnaflow cb) and I have zero rasp and am very quiet ! I have h/c too ! Now i used to have 1-3/4 hookers w/ ory and it was way louder with wicked *** rasp at around 2k.[/PHP]
[
Duh...cats versus no cats.
No **** sherlock ! What I'm sayin is that i had the exact same set up as the op claimed to be raspy. I got cats to get rid of the rasp. He said went he went from having no cats to cats it got worse.
Finally got rid of rasp
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I finally got rid of rasp.
Before mod:
ARH 1 7/8 long tubes with catted ARH merged y pipe back to a Magnaflow stainless catback.
Before mod:
ARH 1 7/8 long tubes with catted ARH merged y pipe back to a Magnaflow stainless catback.