Hi Lee
most of us started many years ago with the same question , and although I drive something different as expected it uses 1.8t so I will try and answer

The 1.8t (in the world) motors are pushing 900whp , pushing 10 000 rpm , running 8sec 1/4mile (FWD) everyday new things pop up that make the 1.8t even better ( a lot of guys try things and we start seeing what works good and what not)
I dont think you will have a problem with just a remap , It will give you a new car . unbelievable
AS to what company give the guys from Unitronics a call
