nowadays, turbo charger also can function like supercharger. just depend on how u tune it. plonk in not so big turbo with a bit higher compression ratio, the engine will rev not so high (maybe around 5500-6000rpm only) and u'll feel the boost from 1500rpm with very linear torque curve. (see golf GTi, Audi, or 335i engine) put in bigger turbo, a bit lower compression ratio, the engine may rev higher with very high bhp. may lag in low rpm but once the boost come, u may drive in longkang if u cant handle it. 1st u must know how much traction ur car have (either FWD, RWD or 4WD), and ask professional tuner tune your turbo accordingly. NA, supercharger or whatever sure eat dust. my opinion only..