i offer u a set of turbo kit...if u wan...hihi...or maybe a set of force piston n nitro system....for dc5....i think the best is nitro system...can easy gain 50hp..just on the trigger....low cost n gain more...for thse N/a engine wanna get 50hp..cost is almost 20k...n nitro system cost u 3k n force piston cost u 2k...workmanship + tuning..cost u 2k....umhh..is still cheap rught..hahaha