Blow OFF V's (BOV's)
BMW Tech
Joined: Mar 2002
Posts: 845
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From: Auburn, Alabama
The wastegate is there to regulate boost pressure.
When the boost level reaches a preset position (usually determined by a spring, or other means), the wastegate opens, allowing exhaust gases to go out into the exhaust, and bypass the turbine wheel. Thus, maintaining a constant boost level.
When the boost level reaches a preset position (usually determined by a spring, or other means), the wastegate opens, allowing exhaust gases to go out into the exhaust, and bypass the turbine wheel. Thus, maintaining a constant boost level.
Full Member
Joined: Nov 2007
Posts: 60
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From: Maryland
Okay so if your throttle plate just closed your wastegate would close also due to the change in vacuum correct? I'm still not so sure on the non use of a dump valve, seems like it will make your turbine last longer with one. I found information saying that its not exactly stressing the turbine but the bearings. Correct anything I said if its incorrect because like I said I'm new to turbo stuff.
Thread Starter
Full Member
Joined: Jul 2007
Posts: 75
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From: Evansville,In
There are several different kits available. I know Apexi, HKS, Blitz and Greddy all make kits that include a mounting bracket and a model specific pipe with mounting flange. The Apexi gives you a little tunability as far as the noise produced as it has a ring that can be rotated with different size holes.
Just shop around there are a million places that sell them on the net.
Just shop around there are a million places that sell them on the net.
development
Joined: Aug 2002
Posts: 5,714
Likes: 7
From: Lafayette, LA
Okay so if your throttle plate just closed your wastegate would close also due to the change in boost correct? I'm still not so sure on the non use of a dump valve, seems like it will make your CHRA last longer with one. I found information saying that its not exactly stressing the turbine but the bearings. Correct anything I said if its incorrect because like I said I'm new to turbo stuff.
I like the way my car performs without one...quiet and responsive. Show me evidence of bearing failure due to lack of a BOV. I'm not so much into the look at my car, hear me coming.
If it fails my turbo is rather cheap to rebuild.
If my BOV would fail, my motor and turbo aren't cheap to rebuild...lots more labor and down time involved.
development
Joined: Aug 2002
Posts: 5,714
Likes: 7
From: Lafayette, LA
Rotary Enthusiast
Joined: May 2005
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From: Okayama - Japan
Full Member
Joined: Nov 2007
Posts: 60
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From: Maryland
I c, What vehicles come without a dump valve? All the Mitsubishi's I have seen come with one. I guess its just preference, but even if there is or isn't evidence for turbine problems I would use a dump valve.
