True Dual users... c'mon in!!
In my current setup, I've got Hooker LT's running through a 3" dual setup (Dr. Gas X-pipe, Dynomax bullets, turndowns before the rear axle).
Sounds awesome outside the car, but I'm getting a TON of resonance and reverb inside the car... literally feels like I'm ripping the car apart. That's no fun...
What I'm thinking about doing is picking up a couple of 3" Dynomax Ultra Flos and installing them in place of the bullets, and then turning the turndowns out slightly so they're not facing directly down.
Do you think this would help with the interior noise??
If so, I'd also like to do this myself, since I can't find any local exhaust shops that'll come close to my car w/out the cats. Where could I pick up an exhaust expander so I could slip fit the new muffler into the existing X-pipe setup, and slip-fit the turndowns onto the mufflers?? I've found a few "tailpipe expanders", but they specifically say that they are not intended for enlarging pipes (just pushing out crimps).
I know this is long, but I'd really appreciate your input.
TIA!
There is a sound clip of mine on the movies of my website in the sig...
<small>[ December 12, 2002, 10:43 PM: Message edited by: JxxxOxxxE ]</small>
GL on speed bumps <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" />
I like ur design JOE. Thats looks like it would work great. Do you loose alot of airflow by the axle? Those humps look restrictive
<small>[ December 13, 2002, 12:14 AM: Message edited by: Boo Yeah ]</small>
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<strong>I think that when I finally break down and do a dual setup I will run Jet Hot LTs with 2 12in Dynomax bullets...</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">That'll be a tight fit if it fits at all. The 12" mufflers are actually longer than 12". Your x-pipe needs to be before the drive shaft, and with the exit angles from the LT headers, it's not going to be easy to fit them in without putting in a near 90 degree bend on the way to connecting at the x-pipe.
If you want a less resonant sound, try the Borla XR-1 race mufflers. They flow just as well as the Dynomax, and they sound deeper and more refined than the dynomax. I'm thinking about swapping my dual 12" dynomax out for the Borla. At least go with the 16" dynomax...the 12s are REALLY loud. I don't know what else you have done, but with my 3200rpm stall and H/C it sounds like I'm getting on it around every turn just because the engine revs up. Gets allot of attention...sometimes too much.
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If so, I'd also like to do this myself, since I can't find any local exhaust shops that'll come close to my car w/out the cats. Where could I pick up an exhaust expander so I could slip fit the new muffler into the existing X-pipe setup, and slip-fit the turndowns onto the mufflers?? I've found a few "tailpipe expanders", but they specifically say that they are not intended for enlarging pipes (just pushing out crimps).
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">the mufflers should already be slip fit. at least every muffler i have seen is slip fit.
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I like ur design JOE. Thats looks like it would work great. Do you loose alot of airflow by the axle? Those humps look restrictive</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well, I dont really think I lose much with it going over the axle. I am going to dyno it tomorrow. Even if i do lose it over the axle, I have the 2 dump right off the headers. I also have the electric cutouts sitting here beside me, i just need to install them...
My brother has a dual set up with the tail pipes running under the axle. The only way you'd hit speed bumps with them is if you removed the wheels or went over a bump sideways.
I'd like to see some pics of these under axle tail-pipes - I'm very interested in how it looks/clears everything.
Another option is 2.5" Magnaflow Magnapacks. 4" diameter and still straight through. Probably still flow plenty for a bolt on car.
Don't angle the turn downs straight down because it will thrum off the ground if you are trying to keep it quiet. I forget when I had mine done. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
Sited I go to Iggy's on Montrose and I ask for Pete and he does all my work or Danny does it. They know my car well. Let me know if you are still wanting these mufflers I will be taking it all apart in January.
So, are the XR1's quieter than the Ultraflows?? I'd been thinking that about getting the 4"x9" Ultraflows (I like the Dynaflow sound), but if the XR1's sound pretty deep but are slightly less loud, maybe I should go with them.
Whatcha think??



