if i decide to get a street port, Wastegate port, Intake and Exhaust, how much power am I lookin to get and also can the stock Ecu handle the mods or will I have to get standalone? Also What is the WHP for a Stock s4 Turbo II model?

I know its about 180 to the crank but was wondering what it was to the wheels? Thanks. For the first question if u can give me a hp/whp estimate that would be great and if there is anything else i would need for this mod so it runs smoothly.

Thanks