How hard would it be to add a second muffler to a UUC Velocimax 2?
12-12-2000, 12:54 PM
#1
AudiWorld Expert
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How hard would it be to add a second muffler to a UUC Velocimax 2?
That is the only way I can think of to quiet this thing down. Who could make it? What kind of expense would this probably cost? It could go right where the stock muffler is at the rear of the S4 instead of the long-piped straight tips.
12-13-2000, 09:57 AM
#5
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Does a muffler really inhibit flow?
The Velocimax is the only dual exhaust on the market, and serves its performance role excellently in that task, but it is too loud for a luxury car, especially the resonance under 2100rpms and the droning below 2500 when cruising. A second muffler could preserve the dual exhaust nature of the VM2 and quiet it down some so that the wife wouldn't complain so much.
12-13-2000, 10:48 AM
#6
Kinda, one reason why it's loud is the exhaust stream is flowing at high velocity and high frequenc
slowing it down and tuning it through baffles mean s quieting it a bit as more of low frequencies are achieved.
Kinda like speaker tuning, the most sensitive woofer design will probably be the one with the most resonance (like some of my home made home speaker systems
and the very tuned ones will need more power per decibel, hence efficiency loss.
If you drill a hole before and after a muffler, hook up a pressure guage, you can measure pressure loss, hence performance loss. And turbos run best without much backpressure - and Corey's down pipe, straight VM setup is loud but very fast at the race track.
Kinda like speaker tuning, the most sensitive woofer design will probably be the one with the most resonance (like some of my home made home speaker systems
and the very tuned ones will need more power per decibel, hence efficiency loss.If you drill a hole before and after a muffler, hook up a pressure guage, you can measure pressure loss, hence performance loss. And turbos run best without much backpressure - and Corey's down pipe, straight VM setup is loud but very fast at the race track.
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12-13-2000, 01:01 PM
#8
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Yes, but...
not nearly as much as those l'il bitty pea-shooter turbos you have, nor your cats. If noise is bugging your wife, er, um...I mean you, adding a high quality muffler shouldn't hurt your flow enough for you to notice. Go for it.
12-13-2000, 01:04 PM
#9
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I seem to recall my little bitty pea shooter turbos propelling me around your slow @ss at TMS ;-P
...and yeah, the noise bugs me some, but not enough to want to get rid of it w/o being "forced" to by a higher power.