external waste gate dump
Thread Starter
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Joined: Sep 2011
Posts: 73
Likes: 0
From: hershey PA
external waste gate dump
does anyone have a video or audio clip of just how loud a twin turbo waste gate dumping into the air is?
i found numerous ones of the wastegate going back into the system, but none for going into the air
Thank you
i found numerous ones of the wastegate going back into the system, but none for going into the air
Thank you
Pro
Joined: Mar 2010
Posts: 608
Likes: 9
From: St. Petersburg FL
no audio. I have built/driven plenty of open wg cars in my day. I personally dont mind how loud it is when they are fully open. In a "daily driver" how often are you really in boost enough that it would open the gates? My guess is hardly ever.
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Instructor
Joined: Jan 2011
Posts: 214
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From: Des Moines, Iowa
I have run both external dump and re-routed back into exhaust. I will never run open dump again, it's just too annoying. True, it only dumps when you have reached wastegate pressure, but it sounds like a jet is taking off and gets old after a bit. To each their own though, if you like the crazy loud sound, then go for it.
To user_name: if you run an open down pipe, the boost will creep even more with less back pressure.
To user_name: if you run an open down pipe, the boost will creep even more with less back pressure.
Melting Slicks
Joined: Feb 2006
Posts: 2,163
Likes: 5
From: Houston
I have run both external dump and re-routed back into exhaust. I will never run open dump again, it's just too annoying. True, it only dumps when you have reached wastegate pressure, but it sounds like a jet is taking off and gets old after a bit. To each their own though, if you like the crazy loud sound, then go for it.
To user_name: if you run an open down pipe, the boost will creep even more with less back pressure.
To user_name: if you run an open down pipe, the boost will creep even more with less back pressure.
Le Mans Master
Joined: Jul 2010
Posts: 5,407
Likes: 265
From: montreal quebec
not sure but, usually when running ext dumping gate it should prevent boost creep. because it help wg to flow more less back pressure which will flow better and quicker. but less back pressure in EXHAUST system will more likely created boost creep. my single turbo supra is external dump sound like a jet, its not annoying since i hardly fully boost on the street. i had boost creep problem with the sti, cause wg wont flow enough, put a external one problem solved
Melting Slicks
Joined: Jul 2008
Posts: 3,002
Likes: 216
From: Houston Texas
2018 Corvette of Year Finalist
2017 C5 of Year Finalist
I'll post my experience. This was on a 70mm single turbo with a 38mm tial wastegate. At WOT, it sounded like I ran over a Harley motorcycle and it got stuck under the car with the exhaust pipes point at the firewall.
You couldn't hear anything when not in boost, but as soon as the wastgate opened, this was the only sound I could hear. It attracted the wrong kind of attention from law enforcement due to the noise.
I modified a lawnmower muffler and put it on the outlet of the wastegate to knockdown some of the noise. It made the sound bearable.
You couldn't hear anything when not in boost, but as soon as the wastgate opened, this was the only sound I could hear. It attracted the wrong kind of attention from law enforcement due to the noise.
I modified a lawnmower muffler and put it on the outlet of the wastegate to knockdown some of the noise. It made the sound bearable.
Burning Brakes
Joined: Feb 2004
Posts: 1,130
Likes: 0
From: Camarillo/Oxnard CA
http://www.youtube.com/watch?v=8KheP7e43KI
Here is a vid of mine with open WG dump straight down at rear of bumper. It's a Leer Jet sound and i am addicted to the sound. Also has a 4" downpipe with a 4" glasspack muffler for diesel trucks.
Here is a vid of mine with open WG dump straight down at rear of bumper. It's a Leer Jet sound and i am addicted to the sound. Also has a 4" downpipe with a 4" glasspack muffler for diesel trucks.
Burning Brakes
Joined: Feb 2004
Posts: 1,130
Likes: 0
From: Camarillo/Oxnard CA