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Message: <blockquote data-quote="rollakid" data-source="post: 259341" data-attributes="member: 6588">depends pretty much on you. Do you prefer more torque so you can burn rubber? or do you like to hear the engine screem at 10k rpm?(if you have the money for lighter engine internal that is...) :lol: if you like the feel of g force when you accelerate, then supercharge will suit you more. Its easier for amature driver(like me) to go faster around the track or on the road since the power come pretty soon.but if you have force-induction-phobia ( :ph34r: i made that one up myself), or you want to let the world know that 5" 12k rpm tacho isn't just for show, then 20v (or 16v na) is your only choice, not to mention they sound nicer with quad throttle (to some people).for what i know, the more you mod the gze (with oversize puley and stock supercharger), the less you can rev; the more you mod an NA 4ag (be it 20v or 16v), the more you need to rev to get the power.This is because the supercharger got its limit, the bigger the pulley the faster the supercharger will spin and reach its limit faster, thus slower the engine can rev for effective power.The NA counterpart of 4ag can produce more HP than the supercharge, although less torque. With 16v 4ag goes as high as 240hp like the one used in formula atlantic (20v 4ag can't reach that high tho...). But you need camshaft with whoopin high duration, which mean you can forget about taking your gf to the shoping mall with it (and stuck in traffic jam). You probably won't get power under 6000rpm.thats about what i understand, got few more point but any longer ppl will ignore my post. i'm no expert, still learning, so i could be wrong...deciding which one to mod is up to one self, but if that doesn't concern you and your main priority is to tapau vtec, with 20v as MCSB engine and heavily tuned one don't have low end power, best bet.. i mean the only bet.. is to go for supercharge (or throw away the supercharger and pasang a big siput :lol: ). I don't see an easy way to beat a b16 engine with 4ag, unless they come up with a VVTLi 4ag.if only honda are still using ZC engine then 4ag might still be able to beat them...</blockquote>