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Originally Posted by SharpByCoop A couple of points: Both the BOV and the Waste Gate can run the excess to atmosphere, OR back into the exhaust or into the intake.
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Quote:
Likewise, with the BOV vent, there would be no reason to ever run it into the exhaust tract. In fact, hooking the exhaust tract up to the BOV could cause some serious issues as BOV valves are not meant to be used at that temperature. Furthermore, with a post-MAF bov, you really need to run it back into the intake tract to keep AFR correct. Otherwise you are venting air that the MAFs have metered and expect to be combusted. You can tell a car running a VTA BOV post MAF because it will usually backfire after a shift because of the temporary super rich mixture. Accordingly, your logical options are as such: WG -> vent to atmosphere or reroute back to exhaust post-turbo BOV -> vent to atmosphere or reroute back to intake post MAF (assuming BOV is post-MAF)
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