APR has designed the best intercooler upgrade for your 2.0T FSI engine as found in the Audi A3 and TT. Charge air cooling is essential to maintaining powerful and safe operation of a turbocharged engine and as performance is increased, so must the efficiency of the intercooler. The APR FSI Intercooler is a perfect OEM intercooler replacement with an intercooler core size almost three times the size of the original unit.