superchargers dont put out that much HP ?

[Quadzilla]

Hey Steve, exactly what do you know about me and what I have done and worked with?

And for your information a screw/impeller style, depending on the vanes and level of boost can draw as much as 100hp off the avilable power.

So next time you open your yap: Think.

That said, I'm not terribly familure with outboard mounted paxton style unit and thus my assumption on power losses both tribological and otherwise were out of perspective. However it still needs to be stated that a belt or gear driven supercharger is still going to leach power off of the mill.

Also another point that wasen't touched on here, so far as I've seen, is the effect of static compression vs dynamic and the result on boost vs output power. You can make more power with a forced induction system by lowering the compression ratio (flycut pistons or thicker head gaskets) and upping the boost and using a high lift shorter duration cam. The rational here being a lessened chance of detonation and a greater amount of actualy forced induction. Forced inductio engine need to be built from stage 1 as a huffer to make the absolute most use of the induction system. Adding to a stock mill will work but it takes a lot of fiddling with them to get it right. Dinan has been doing it for a long while and have gotten very good at backwards engineering it to work. If you were to go with a complete setup, I'd recomend, as stated above, that you see a Dinan/BMW dealer first if only to see the hows and whys of where the money would go.

[fourfa]

And for your information a screw/impeller style, depending on the vanes and level of boost can draw as much as 100hp off the avilable power.

sure, if you're talking Top Fuel Dragsters... which I don't think anyone was. the Powerdyne centrifugal compressor is as efficient as a decent turbo compressor, so we're definitely not in the 100 hp drag realm. anyone have compressor maps? Easy enough to figure it out.

anyway: you can't just switch computers, I recall. The coded EWS anti-theft has to be re-coded to the new computer. This can be done at the dealer for probably a lot less than Dinan will charge. But I think you'll have to have both cars there.

[paul e]

And for your information a screw/impeller style, depending on the vanes and level of boost can draw as much as 100hp off the avilable power.

Quadzilla, we naturally assumed you were referring to a Centrifugal Supercharger, since that is the ONLY type which is commercially available for our M3s, and other modern 6 cylinder bimmers...And for that application, you overstated the blower drain by about 4 times...Any wonder we questioned your assertion?

[fourfa]

sorry, Vortech not Powerdyne