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Message: [QUOTE="2000wa250, post: 1014156, member: 3399"] This makes no sense to me. I'm with Charles, blower after turbo makes more sense. I get the idea of parasitic drag, but from a physics perspective to me that seems irrevelant if it is post turbo. Parasitic drag is when the ratio between inlet and outlet is high enough that its making the blower work harder (air pressure against the outlet side). If the turbo was feeding the blower, wouldn't the force (from turbo boost) acting on the intake side of the blower negate the parasitic loss from back pressure on the output side? To me it seems like the way to do it would be intake > turbo > blower > intercooler > stock plenums or whatever you put in their place. Would have the instant spool up on the low end from the blower, and would pick up a bit more top end as the turbo lights. I see it like this....how is say 10psi on the inlet side going to cause parasitic loss? The outlet side would be at 10psi as well if the blower was making 0 psi.... To me that seems to be equal pressures between inlet and outlet, which is the same as a blower operating by itself... from a ratio perspective at least. If I'm wrong about how parasitic loss effects blowers then please correct me, but I would be inclined to look at it as the same as boost vs. Back pressure in a turbo.... Granted turbos do not suffer from parasitic loss, but performance surely suffers if pushed out of its map aka the ratio between boost and backpressure becomes too high where you approach the point of diminishing gains. Pressure is pressure right? Even at atmosphere there is pressure, the idea is that it is equal on both sides. A blower by itself has parasitic loss because the pressure on the outlet side is high enough vs atmosphere that the blower requires more energy to turn due to the increased resistance of that pressure trying to release backwards through the blower.... Sent from my SCH-I545 using Tapatalk [/QUOTE]