[eckoman_pdx]

That centfigual supercharger (like Votrex supercharger) is simliar to a Turbo (in how boost is delivered). Like turbochargering, they generates boost in line with engine rpm (though the boost is created though different methods). It (and votrex) will be less harsh on a engine than a roots or twin screw supercharger, just like a turbo will. This is because, again, the boost is generated in line with engine rpm. Even though they claim 70-75% hp increase with intercooler on 8-9% psi with their kit, I personally would be weary of prodcuing much over a 40% hp increase on stock internals, turbo, supercharger, all-motor, nNOS, it doesnt matter. Most books you read on engine performance and building will state that too. If you plan to build up the internals this point is moot. This goes for anything, Turbo or supercharger. I'm still a turbo man, but hey, to each his own. At least now he has a good Turbo kit and charger kit to check out. I still beilive the best rout is to custom build a kit, taking your tie and doing your research to get the proper turbo that best suits your application. Turbos come in all shapes and sizes, each desgined for a particular app. Remember, when is comes to a centifical supercharger like vortex or the procharger, since they create boost in line with engine rpm, there will be some form of "lag", per say. Most reviews on the centifigul chargers I've read, and most ppl that I've talked to that had one, said they feel like an "ungodly Vtec" just kicked in after a certain rpm. This is similar to how a turbo would work. When searching for a turbo, make suree it's in the 70% operating egffiencey island when you look at the graph lay-outs. Both these are not bad opinons though, the cenfitcal superchargers listed above and Turbo's deliever boost in vitrually the same manner...in line with the engines RPM. The place they primily differ is in HOW they create the boost, belt driven, exhaust gas driven, etc. I personally still perfer a good turbocharger to a supercharger anyday, but, to each their own. The amount of boost a Turbo can produce is directly realted to the size of the a/r housing. If you need a bigger boost app...don't cut corners and buy a small housing turbo. Sure, it''ll spool quicer with less lag, but it wont effeienctly produce power at the boost levels. Make sure you get the right turbo...or blower...for your application needs. I wouldnt call either one bad, just differnt. Figure out what and which suits your needs best, and then look for the right kit or put your own kit toghter from there.