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Old 09-29-2020, 01:56 PM   #37
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Join Date: Feb 2008
Location: Kansas, USA

Originally Posted by dl242gt View Post
However, at higher rpms above idle the fumes reverse direction
Reversal is more of a function of intake vacuum...pedal to metal, and suction is much less than at idle...higher RPMs with a load (driving steady speed like 60 mph), less vacuum than at idle
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