This brings up an interesting question that one or more of you may be able to answer. Every supercharger I have seen blows the forced induction right through the carb or into the throttle body. Many turbo's do the same (the turbo in question and the Legend engine in Marc's, plus 502). Harry Ward who had one of the first aftermarket turbo'd cars was also a blow-thru. HOWEVER, the BAE single turbo kit and the Turbo Manifold Twin kit are "blow-by"; ie, the forced induction is blown into the intake manifold to supplement the air pulled into the throttle body. WHY? Is there a performance advantage of one approach over the other? Or, does it have to do more with available engine compartment space and/or the ease of hooking up one system over the other. I'd sure like an educated response. --- "Marc A. Levy" <malevy@xxxx> wrote: > This is one of the early kits that were offered. I > had seen photos of this type of setup before, but it > is one of the less common ones. > > [long quote trimmed by moderator]