my rabbit would go like 75 top speed when it was a n/a 1.5, now it goes almost 140 mph @ 25 psi (ran out of road like ed) before it hits the governor. except, unlike ed, my car is slower to 80 then it is to 100, once i grab fifth gear, it just starts pullin like a mother. i really dont even know where the top ceiling of my governor is, really high, i know that. my GTI will pull till like 6000 rpms on the tach, my diesel pulls till who knows when, and you can get more mph out of every gear between shifts with almost identical transmissions (9A in the GTI, AUG in the diesel.)