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Latest Ideas for Minimizing Rasp

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Old Oct 30, 2003 | 09:56 AM
  #1  
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From: Boring Green, Kentucky
Default Latest Ideas for Minimizing Rasp

I know this is an old topic, but since my H/C package went in, my rasp has gotten a little too loud. Any recent ideas that have been proven to work? The MAC/ORY combo with the H/C is a bit much.

Thanks.
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Old Oct 30, 2003 | 09:58 AM
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Bullet mufflers are still the best solution. That, or going to a quieter muffler.

It has alot to do with what header you're running too. The Macs are pretty bad about drone and rasp.
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Old Oct 30, 2003 | 11:21 AM
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Originally Posted by Colonel
Bullet mufflers are still the best solution. That, or going to a quieter muffler.

It has alot to do with what header you're running too. The Macs are pretty bad about drone and rasp.
Thanks Colonel. Put the Bullet in the I-Pipe? This is what I read before.
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Old Oct 30, 2003 | 03:00 PM
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A Dynomax bullet in the I-pipe worked wonders for me. 90% of the rasp is gone and what's left just sounds like exhaust "tone" to me now.
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Old Oct 30, 2003 | 03:10 PM
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How much does it affect flow and HP? Wouldnt that eliminate the benefit of a cutout?
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Old Oct 30, 2003 | 03:47 PM
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just get true duals and xpipe and rid the rasp all together
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Old Oct 30, 2003 | 03:57 PM
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Originally Posted by ssfiress
just get true duals and xpipe and rid the rasp all together

I would love to. But I blew all my money on the Heads/Cam/LS6 Intake/Pushrods/ASP Pulley/160 stat. So for now, until I'll have to "band aid" the nuisance. Bullet in the I-Pipe will be next. Where can I get these mufflers? I hope they're not expensive. Oh, and to repeat the question, any HP loss? If so, I'm sure it's minimal, my ears need relief.
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Old Oct 30, 2003 | 03:58 PM
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just get true duals and xpipe and rid the rasp all together
Fixed mine.
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Old Oct 30, 2003 | 04:07 PM
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the Hooker catback totally fixed my rasp, which was terrible!
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Old Oct 30, 2003 | 04:13 PM
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there might be a slight loss of power. when i got my headers and cam done i had the LM at the time and i thought it would sound like caca even putting a bullet in the place of the resonator so i just save myself the hassel and went for the true's. im stoked on the sound it blares. whaaap whaaaap.
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Old Oct 30, 2003 | 04:41 PM
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You can get a dynomax 3" bullet muffler from jegs or whoever for like $35-40 bucks. Im not sure what HP loss you will have - but im sure it will be minimal. Those mufflers are straight thru - I have one on my car, similar to a loudmouth setup, and it seems to breathe quite well.
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Old Oct 30, 2003 | 04:59 PM
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I put on the Corsa Catback w/my H/C Mac/ORY combo...absolutley LOVE the sound...nice inside..throaty at idle and still will scare ricers away w/the blip of the converter...hehe...
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Old Oct 30, 2003 | 04:59 PM
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There is no discernable loss (possible theorectical loss) of power with a bullet muffler in the I-pipe. You can drop a tennis ball straight through a 3" bullet.
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Old Oct 30, 2003 | 05:10 PM
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Thanks 'all. A lot of great responses. Dynomax it is.

This site rawks....
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Old Oct 30, 2003 | 06:54 PM
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Stock catback and cutout = no rasp when capped, this is why i kept the stocker on the car.
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Old Oct 30, 2003 | 07:01 PM
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Originally Posted by Colonel
Bullet mufflers are still the best solution. That, or going to a quieter muffler.

It has alot to do with what header you're running too. The Macs are pretty bad about drone and rasp.
Actually, *cats* are the BEST solution when running a "single" exhaust set-up(any cat-back system). A true dual set-up also fixes that problem without the cats.

Maybe some people have had luck with the Dynomax Bullet mufflers in their I, but the ones I've heard did hardly anything to get rid of the rasp through a cat-back system on a car running no cats...

Mike
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Old Oct 30, 2003 | 09:31 PM
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If you get some long tubes it will solve ur problem, those macs w/ory just sound horrible, even with the bullet muffler in the I-pipe, all it is going to do is make the rasp not as loud.
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Old Oct 30, 2003 | 11:23 PM
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From: Boring Green, Kentucky
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Originally Posted by Hicks 2KTA
If you get some long tubes it will solve ur problem, those macs w/ory just sound horrible, even with the bullet muffler in the I-pipe, all it is going to do is make the rasp not as loud.
Well, that's a start. You guys are coming up with great ideas, but I just blew my wad (remember?) on a pretty expensive project so I was looking for a *cheaper* way to give my ears a break. Everyone has a good idea on this one, thanks, but I only wish I could just change stuff out.

Starting tomorrow, I will stand on the median and hold my bucket with a sign reading "Need Longtubes, God Bless."
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Old Oct 31, 2003 | 12:32 AM
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"Actually, *cats* are the BEST solution when running a "single" exhaust set-up(any cat-back system). A true dual set-up also fixes that problem without the cats.

Maybe some people have had luck with the Dynomax Bullet mufflers in their I, but the ones I've heard did hardly anything to get rid of the rasp through a cat-back system on a car running no cats..."


Mike, the bullet muffler I used was an SLP (the absolute longest I could stuff between the collector of the Y and the cuttout.) It got rid of at least 90% of the rasp and certainly flowed better than any cat. I can't vouch for the Dynomax brand.
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Old Nov 1, 2003 | 10:37 PM
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Originally Posted by Colonel
"Actually, *cats* are the BEST solution when running a "single" exhaust set-up(any cat-back system). A true dual set-up also fixes that problem without the cats.

Maybe some people have had luck with the Dynomax Bullet mufflers in their I, but the ones I've heard did hardly anything to get rid of the rasp through a cat-back system on a car running no cats..."


Mike, the bullet muffler I used was an SLP (the absolute longest I could stuff between the collector of the Y and the cuttout.) It got rid of at least 90% of the rasp and certainly flowed better than any cat. I can't vouch for the Dynomax brand.

Colonel, I now know which route I'm going....thanks. Decreasing 90% rasp is like heaven right now.
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