Hi. I've had my '06 GTI since Feb after 4 Type r's and an S2000 and torque is a great thing!
Its stage 1 mapped with Miltek cat back but otherwise std.
I've fitted a dogbone insert and after a week or so can really feel the difference.
On and off throttle much tighter. defo recommend.
Only issue with the car is rust on front wheel arches, vw warranty issue? not sure, my local dealer seemed vague about it. Not really pushed the issue yet tho.