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BOV "pumping air back in"
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<blockquote data-quote="kennethfong" data-source="post: 2117612" data-attributes="member: 4371"><p>empty,</p><p></p><p>you're new, but u can do a search though, plethora of same discussions are available here in the old threads.</p><p></p><p>ur 93T is using air flow sensor, it measures how much air going into ur intake manifold, it tells ur ECU how much fuel to be injected to ur injector, but when u dump the air out (Vent to Atmosphere Blow Off Valve), the air fuel mixture is wrong, instead of the air going back to ur intake manifold it goes OUT, so u will have sudden rich burn excessive fuel at that particular time and will suffer jerking while changing gears some to the extent of engine stalls, but yours is an auto, the impact might be slightly lesser.... can try and if u have these problems, either convert your MAF into other air measuring system or change back to ur current stock bypass valve.</p><p></p><p>please bear in mind it has been a fact that the performance of MAF with a vta bov will slow down ur performance by an average 0.5 second in 400m.</p></blockquote><p></p>
[QUOTE="kennethfong, post: 2117612, member: 4371"] empty, you're new, but u can do a search though, plethora of same discussions are available here in the old threads. ur 93T is using air flow sensor, it measures how much air going into ur intake manifold, it tells ur ECU how much fuel to be injected to ur injector, but when u dump the air out (Vent to Atmosphere Blow Off Valve), the air fuel mixture is wrong, instead of the air going back to ur intake manifold it goes OUT, so u will have sudden rich burn excessive fuel at that particular time and will suffer jerking while changing gears some to the extent of engine stalls, but yours is an auto, the impact might be slightly lesser.... can try and if u have these problems, either convert your MAF into other air measuring system or change back to ur current stock bypass valve. please bear in mind it has been a fact that the performance of MAF with a vta bov will slow down ur performance by an average 0.5 second in 400m. [/QUOTE]
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BOV "pumping air back in"