What is the weight of the MK 4?.... I run a MK III Jetta, at a race weight of 2365.....
Mike Ogren is worth listening too.... we are running 650lb x 8 Eibachs on the front, no front bar, and 750 lb x 8 Eibachs on the rear with a very beefy rear bar. We have gotten the car to oversteer on very fast turns, like turn 1 at Sebring (in 5th ) but it does get exciting. Mike's recommendation is also correct that you might want to start a little softer and work your way up.

David Ellis-Brown