Quote:
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.
Coop
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I think you may have accidentally made a mistake. You most certainly would not ever run the wastegate output back into the intake. That would be fiercely hot exhaust gases going back into the intake tract, which is crazy. Notwithstanding the heat, most of the oxygen is gone. You would never do this.
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)