I'm thinking about installing a by-pass valve on my Maguson supercharger, is it worth the time and money? Also any negative or positive effects on the system in general?
I'm thinking about installing a by-pass valve on my Maguson supercharger, is it worth the time and money? Also any negative or positive effects on the system in general?
why? so that you can "stay out of boost? i'm not sure i understand the point.
Last edited by Prizefighter; 12-06-2012 at 06:57 AM.
ok, but why? is your supercharged system capable of generating that kind of power to justify it? i just have a hard time envisioning where this is of significant benefit to SC owners (on the 3/s) where virtually every SC application i've ever seen is tuned for < 10lbs of boost. usually less than 8. i'm having a hard time picturing how throttle-lift will damage a supercharger in the same manner it will a turbocharger.
A supercharger bypass valve (SBV) is not the same as a blow off value (BOV). A BOV is used to prevent compressor surge, an event that happens when lifting off the throttle of an unvented, turbocharged engine. Without a BOV, high pressure air, trapped in the intake system, would cause a pressure wave that would be forced back into the compressor which can rapidly slow the turbine or even stall it.
A SBV is a vacuum operated device installed between the throttle body and supercharger. When high vacuum is present opens, equalizing the vacuum pressure through out the intake system which virtually eliminates all the parasitic loss that the SC has on the engine. When you depress the accelerator, vacuum falls and the SBV instantly closes allowing boost to build. Magnuson claims that their MP90 uses less than 1/3 hp when crusing a 60mph.
In other words its for fuel economy - by preventing boost from building under lite loads.
I installed my SBV about a year ago and realized about a 2mpg increase in fuel economy. I purchased my SBV from Magnuson, I think I spent about $60 however ever due to hood clearance problems I mounted mine on the bottom side of the SC which was a challenge in itself.
Hope this answers your questions.
I know the Grand Prix's come from the factory with a bypass valve. I, however, do not believe it is located between the TB and the SC. The TB is mounted directly to the SC in that application.
[06-05, 19:29] OhioSpyderman: Brian, finding a woman is NOT the answer, you need to shop for a good VACUUM
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