What should I try and save up for that is most efficient, twin-screw or centrifugal. I want to get about 440 give or take 20 to the wheels w/o changing the internals. Will this be a safe amount to run w/o engine problems later down the road. Who has some good priced kits out there and what is involved in getting them setup, as for a tune and chip do the kits come with them already so i can just "plug and play" ?? thanks some prices will be greatly appreciated. Thanks
Mike
Mike