Quote:
Originally Posted by blur
@ SVTSHC
It's a rotrex style centrifugal supercharger. So fuel mileage would remain unchanged with a setup like this? What kind of psi setting would give the best MPG?
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Well truthfully the best fuel mileage is produced when the car isn't boosting. Centrifugal blowers only make boost under load (I.E. during spirited driving, uphill climbs, trying to pass another car, flooring it for the sake of flooring it), so under normal driving conditions when you aren't being an animal with the throttle you'll get the same fuel mileage you did when your vehicle was NA.
So essentially the rules with a centrifugal blower are the same as without one when you're boosting (or in an NA vehicle, driving WOT or almost WOT) your vehicle compensates with additional fuel; with a centrifugal blower that's when you take the hit.
The only reason people typically claim they've lost fuel mileage is because... well.. who supercharges a car without "spirited" driving in mind lol.