Need opinions of SLP D/D with Long Tubes and OR Y.
02-09-2004, 11:29 PM
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Need opinions of SLP D/D with Long Tubes and OR Y. Right now I have an X pipe w/ 18" bullets dumped before the axle. For some reason Im thinking about wanting a quiet exhaust now. How does the SLP D/D sound with Long tubes and off road Y pipe? Is it raspy at all? How much power do you think I will be losing over the duals? I will also be installing a cutout so I can be loud when I want to be. Just think it will be fun to play "sleeper" mode for a while.
If anyone has sound clips that would be great!
Nick
If anyone has sound clips that would be great!
Nick
02-10-2004, 06:51 AM
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I had a SLP dual/dual for a very short while with an ORY. It was way too quiet for me so I sold it. There was zero rasp though, that was nice. 
02-10-2004, 07:18 AM
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I had it for a day. It was raspy, just very quiet so it was hard to hear it. I have a Magnaflow with a 12" bullet in the I-pipe and could not be happier. Virtually no rasp throughout the RPM range. Quiet at cruise. Smooth and loud at WOT. My Loudmouth on stock manifolds/cats was louder than the Magnaflow with long tubes and ORY, just much less refined. I have heard the 18" bullet will quiet it down even more.
02-10-2004, 10:20 AM
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That's my exact setup also and I love it. I daily drive my car alot and love having a relatively quiet exhaust that still flows decent along with a QTEC for when I want to be loud and a want a few extra HP @ TQ. Since swapping cams to the TR224 it seems the little bit of rasp I had with this setup is gone and hardly noticeable anymore. At idle my setup with the 112LSA is very deep and burbly and cruising emits a nice deep LS1 tone. WOT the DD opens up and screams. As far as losing power over your duals throw a cutout in the I pipe and you won't even notice. Going through the muffler you'll probably lose 5-10rwhp.
02-10-2004, 11:31 AM
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I run the D/D with QTP LT's and a custom made 3.5 stainless oval Y-pipe (for ground clearance). Overall I love the sound of it. Not too loud and not whisper quiet either. Unfortunately I do have some rasp under part throttle from 2700 to 3000 RPM. I'm thinking of trying a bullet in the I-pipe when I find one that is made of stainless.
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02-10-2004, 12:24 PM
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Originally Posted by Sanders
FFF, do you have the whole magnaflow catback or just a magnaflow muffler?
I have just the magnaflow muffler and its awesome.
My friend has teh magnaflow catback, and his is just a nut hair more refined.
I also have a polished muffler for sale in the classifieds.
02-10-2004, 01:44 PM
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Originally Posted by Sanders
FFF, do you have the whole magnaflow catback or just a magnaflow muffler?
02-10-2004, 06:00 PM
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Originally Posted by Chris99WS6PWTMET
I run the D/D with QTP LT's and a custom made 3.5 stainless oval Y-pipe (for ground clearance). Overall I love the sound of it. Not too loud and not whisper quiet either. Unfortunately I do have some rasp under part throttle from 2700 to 3000 RPM. I'm thinking of trying a bullet in the I-pipe when I find one that is made of stainless.
Want a stainless bullet type muffler? No problem! Check out LS1 tech sponser: http://www.stainlessworks.net/
BTW I'm surprised that any of you guys got rasp with this catback. I've had about 7 different catbacks, and tons of different exhaust configurations on my LS1s, and the only one that didn't rasp was the dual/dual that I had.
Also, when I was using catbacks with rasp, it only occured under 2500rpm, usually in the 2100-2300 range. Odd that yours does it so high Chris? 
02-10-2004, 08:30 PM
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Depending upon the headers, there will still be a bit of rasp in the SLP D/D. Coming from just a bullet muffler, you'll find a big reduction in noise by going to a D/D. I actually used the 18" bullet in my I-pipe witha D/D to eliminate all rasp. The rasp in an A4 with a high stall is much worse than M6.
02-11-2004, 12:39 PM
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I run the SLP dual/dual with TTS lt's and a custom 3" ORY and have no rasp whatsoever. I've run many different catbacks (Borla, Mufflex, Flowmaster) and the dual/dual was the only one without rasp.
02-11-2004, 01:47 PM
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I really like my D/D with the race pipes and I don't have any rasp either, the only thing I don't like about it is that it looks huge from the rear and the weight. If and when I change it out I'll probably go to the GMMG or the Texas speed true dual out the rear if they ever get that one ready to go.
02-11-2004, 02:19 PM
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I'm running the FLP's with ORP's, and the dual-dual, I personally think its the best sounding exhaust setup around, no rasp at all, and when you get on it there is a nice note.....