While the 1.8T is good for small applications - Jetta, Beetle, a 1.8L is too small for a big car like the 2002 A4, which weighs I think 3600lbs with AWD.. This means the car is turbo dependent - NEEDS boost for decent performance. So off boost power sux. Lag was nonexistant with the low pressure 150 HP version but has increased noticibly with the higher boost 180 version. Have not yet driven chipped version but expect even less linear power delivery unless perhaps a different turbo is used.
