Forced Induction Superchargers | Turbochargers | Intercoolers

Turbo exhaust

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Old Nov 13, 2005 | 06:39 PM
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Default Turbo exhaust

My turbo kit eliminates the cats and my current set up has two billets of the back making it a little to loud. What kind of hp/tq will it cost me to put a muffler where the passanger cat use to be? Is this a good idea???
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Old Nov 18, 2005 | 08:48 PM
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Lets try this in the FI section.
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Old Nov 19, 2005 | 11:36 AM
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The turbocharger itself will eliminate alot of the exhaust noise. I be the two mufflers in the rear will be enough once the turbo is on there.
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Old Nov 19, 2005 | 01:15 PM
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you could get rid of the two muffles, and get one of those spiral flow mufflers that will allow you to have the same kind of flow, and will deaden the sound considerably
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Old Nov 19, 2005 | 06:57 PM
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Originally Posted by 1CAMWNDR
The turbocharger itself will eliminate alot of the exhaust noise. I be the two mufflers in the rear will be enough once the turbo is on there.
like he said, when you got it all put together youll be suprised how much the turbos deaden the sound.
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Old Nov 19, 2005 | 07:16 PM
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Originally Posted by 69firebird
you could get rid of the two muffles, and get one of those spiral flow mufflers that will allow you to have the same kind of flow, and will deaden the sound considerably
I wouldnt go with a spiral flow muffler. I have a moroso spiral flow and lose a solid 7 HP/TQ, and my car only makes 330 to the tires with the cutout open.
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Old Nov 20, 2005 | 10:39 AM
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you need no muffs with a turbo. my car is quieter with open 3" pipes now than it was with the lt's and flowmasters. even at wot. and with no muffs, you will REALLY hear the turbo.
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Old Nov 20, 2005 | 10:45 AM
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I agree with sr71 the turbo quites the car alot
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Old Nov 20, 2005 | 10:50 AM
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Originally Posted by sr71
you need no muffs with a turbo. my car is quieter with open 3" pipes now than it was with the lt's and flowmasters. even at wot. and with no muffs, you will REALLY hear the turbo.



I'm gonna run a Loudmouth, that's almost like no mufflers... the little resonator on the I-pipe can barely be even noticed!
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Old Nov 20, 2005 | 12:07 PM
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You don't want to run any type of chambered muffler... that includes spiral flow mufflers. Ideally the only type of mufflers want to run for max spool and max flow are straight through bullet type of mufflers, but they don't do all that much to kill sound (~2-3 db which isn't ****). Like others have stated, turbos kill a lot of the sound, but don't think you can NOT run mufflers and have it sound like stock...

Last edited by Wet 1; Nov 20, 2005 at 06:05 PM.
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Old Nov 20, 2005 | 05:27 PM
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Originally Posted by Wet 1
You don't want to run any type of chambered muffler... that includes spiral flow mufflers. Ideally the only type of mufflers want to run for max spool and max flow are straight through bullet type of mufflers, but they don't do all that much to kill sound (~2-3 db which isn't ****). Like others have stated, turbos kill a lot of the sound, but don't think you can run mufflers and have it sound like stock...
actually, my car did sound stock with bullets on it. not to mention that the bullets killed ALL of the turbine whine.
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