Re: What's the difference between atmospheric valves and - Saab Performance Bulletin Board - Saabnet.com
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Re: What's the difference between atmospheric valves and
Posted by Tyler (more from Tyler) on Tue, 21 Oct 2003 15:18:29
In Reply to: What's the difference between atmospheric valves and, JJ, Tue, 21 Oct 2003 15:07:00
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A Diverter Valve is what we have stock on our SAABs, and are commonly known as 'by-pass valves'. These divert (hence the name) the air that bounces off the quickly shut throttle plate back into the intake tract before the turbo. The other type, called an atmospheric valve or 'blow-off valve', does the same thing, only it realeases the air into the atmosphere, which theoretically would cause problems for Mass Air Sensor cars, like most SAABs. In fact, in theory, the diverter valve would perform better as well. I beleive the atmospheric valve would require quite a bit of fabrication to make it fit (welding, etc.). Good luck with your decision.
posted by 68.6.24...
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