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Originally posted by AznVirus
so its mostly honda engines polluting the air?
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There's no pollution involved since it's just air that has been compressed by the turbo.
Quote:
Originally posted by AznVirus
and does this mean that there is no blow off valve at all, but instead the bypass valve takes its place? 
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BINGO! Some people call the by-pass valve a blow-off valve (including me on occasion), but yes, the by-pass valve takes its place.
The reason for recirculating the air is that it has already been measured by the MAF so the computer is counting on it being there so it gets the mixture right. If you vent it to atmosphere, the ECU will provide too much fuel for the air in the engine.