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well its gotta be a positive displacement blower (roots style) not really a big turbo fan because I look at it like this. SC, and turbo are both the same thing. air pums, turbo's are too difficult to build, squeezing exhaust manifold, external wastegate, turbo, intake, intercooler piping and downpipe elbow under the hood and once you've got the thing in then comes the tuning. cant forget about getting a great boot controller because turbocharger systems reference their boost levels based on outside air conditions, care must be taken to ensure proper boost control under all driving conditions. Crawling through traffic on a sunny day and blasting along on a cold, rainy night are two completely different situations that can produce large differences in the amount of air a turbo machine ingests. The same precaution exists for taking a turbo car to different altitudes. then you have all the extra maint. and if you waistegate sticks shut you'll get a detonation wave that will destroy your engine. and I havent even got into turbolag, boost threshold. positive displacement is the way to go, it will make a V6 feel like a V8(thats why its called positive displacement). Im not going to try to fix up anything with less than 300hp stock, so in my camaro thats already got good top end, the blower will make large amounts of low and midrange power unlike a turbo. realistically the best turbo setup and roots blower for most cars will put them around the same HP. usually the turbo up by 10-15hp. at that point its down to who is the best driver. by the way Im not a turbo hater my uncle fabs turbo systems for a lot of Fbodys, and stangs. and they are bad ass untill something goes wrong. and a blower is nearly maint. free.
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