swap engine to 18t . . . upgrade to big turbo (ball bearing I suggest) fmic, injectors siemens 630cc, fuel pump, 4bar fuel regulator, exhaust 70mm from down pipe with custom made final for low noise, custom remap etc etc of course you will need new bigger brakes, suspension and maybe a clutch. . . if you will to do all this you will get around +300hp without opening the engine. . . if you go deeper like pistons etc etc I've seen 18t 20v with +500hp. . . if this is not enough swap to R32 and hit the twin turbo . . . you will see +700hp. . . youtube it and check for these mods . . .
Do not take this as a recipe cause there are a lot of things to do and different setups for different pockets and demands
Do not take this as a recipe cause there are a lot of things to do and different setups for different pockets and demands