Way to quiet my wastegate, any downside to running back to downpipe? - LS1TECH



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Way to quiet my wastegate, any downside to running back to downpipe?

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Old 04-23-2012, 09:29 PM   #1
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Default Way to quiet my wastegate, any downside to running back to downpipe?

The sound of the wastegate opening and hearing raw exhaust really ruins the awesome sound of the turbo whistle. i want to tone down the exhaust sound of my wastegate, is there any side effects of having the wastegate routed back into the down pipe?
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Old 04-23-2012, 10:39 PM   #2
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I don't think there's a "downside", just personal preference. Haven't seen you in forever Andrew...

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Old 04-23-2012, 10:45 PM   #3
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^ That is really sexy!
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Old 04-23-2012, 11:00 PM   #4
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i thought i had read somewhere that some people claim the turbo spools slower with the wastegate routed into the downpipe

i really want to do this, i can barely hear the turbo over my waste gate once it opens up
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Old 04-24-2012, 07:53 AM   #5
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Quote:
Originally Posted by Fondle View Post
The sound of the wastegate opening and hearing raw exhaust really ruins the awesome sound of the turbo whistle. i want to tone down the exhaust sound of my wastegate, is there any side effects of having the wastegate routed back into the down pipe?
I totally agree with you. Ive had both and I prefer having the WG routed back into the exhaust. Much more refined sound.
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Old 04-24-2012, 09:29 AM   #6
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Open wastegate sounds wicked!!
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Old 04-24-2012, 09:35 AM   #7
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If your down pipe is on the edge of being too small, I could see the extra exhaust gas from the gate increasing back pressure. If that happens you could have boost control issues. That being said i run my gate back into the dp. 4 " dp 88mm turbo 402ci 44mm gate and have no boost control issues. I don't like the sound of an open gate either.
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Old 04-24-2012, 09:36 AM   #8
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You could also put a small muffler on the open gate.
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Old 04-24-2012, 12:55 PM   #9
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with the WG recirculated into the DP it increases the demand on the exhaust system

the further downstream it enters post turbine the better
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Old 04-24-2012, 02:40 PM   #10
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A typical modded Buick GN from 1987 runs easy 11's(larger DP,inj,turbo upgrade) and they have dumping into the exhaust at the turbo for decades,a few decades actually..............

no loss of power,just a better sounding whine from the turbo
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Old 04-24-2012, 08:11 PM   #11
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dumped wastegates just sound like an exhaust leak, I think they sound like doo-doo

Mine is ran back into the DP, probably a foot and a half or so down the pipe is where it enters Only two pics I could find with the turbo (among other things) not on the car



With the turbo on and car in 1 piece you really can't see anything though. I Don't think there is any disadvantage to running it back into the DP, unless like someone above said you're DP is already on the small side, it "might" not help....
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2011, bmr, camaro, downpipe, downside, dumped, ls3, muffler, open, quiet, running, suspension, turbo, twin, wastegate

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