Stackin a heat pumpin, power robbin blower on top of another heat pumpin power robbin blower is a great exercise in futility, not to mention a phenomenal waste of cash. Until someone creates a blower that somehow manages to make boost without addin tons of heat into the intake charge, with no way to even cool it they'll never even come close to what a turbo system can do in terms of overall efficiency which is what performance is all about
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