Audi dead, 2.0T all the way!
Miltek tried making a cat back system for a 1.6 but they said at 80mph it created a harmonic resonance in the car that was unbearable when i contacted them for my 1.6.
When i brought the exhaust for mine i took a massive chance with a buying a 1.8t golf exhaust from blueflame but it works really well its not to loud and hasnt created any problembs but i did have to cut a recess in the back bumper (which i wanted to do anyway, rather than it hang under the bumper)
it5 fits exactly tha same as the standard system but you will need a reducer to fit just after the cat.
BLACK AUDI A4 B7 2.0TDI 140BHP S-LINE AVANT
RED GOLF MK5 2.0TFSI 253BHP GTI
BLUE GOLF MK3.5 2.0 110BHP COLOUR CONCEPT CABRIOLET