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not the same
Posted by David (more from David) on Wed, 14 Apr 2004 08:46:11
In Reply to: Is PCV/Check valve same thing as bypass/hooter valve, NYSaab, Wed, 14 Apr 2004 08:15:44
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PCV is the crankcase veltilation valve, the hooter valve serves a different purpose, allowing air to bypass the throttle body when you take your foot off the accelerator. This prevents the rush of air from slamming your throttle shut when you go from boost to no boost situations. PCV gets attached to the engine, the bypass valve gets attached to your inlet air tube and turbo. Forgive the rudimentary explanations, but the black valve is your hooter valve and on my car is located on the bottom of the air inlet between the filter box and the compressor wheel. The white valve is the PCV
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