Hmm... Just had my 98R Audi A4 1.8T Sport for 4 days, then straight into van Aaken Developments for a chip. After 2 hours of waiting, jumped in the car and it makes a MASSIVE MASSIVE difference. A few questions who have had the ECU remapped... (1) is it usual to actually hear the turbo whistling now? (2) seems a little lumpy when accelerating hard... usual? (3) when accelerating hard, letting off slightly, then accelerating hard (i.e. overtaking on motorway), there is a little delay with a little lump before it takes off - usual? (4) My mpg has dropped from about 29mpg to 20! I *HOPE* this is not normal - or I must drive a little more conservatively... Any answers would be appreciated!