Join Date: Dec 2002
Location: Denver Colorado
As with any turbo car , venting to atmosphere from the BOV will cause you to run rich right after the shift. I prefer recirculating BOV's like the Greddy Type-S because the A/F ratio stays where it should. Cars that vent to atmosphere generally have ways to compensate for this electronically , or by having the MAF sensor relocated to AFTER the BOV location. This was possible on DSM's , but may be too hard to engineer with the WRX because of the close confines of the engine bay.........