Hi,
I've got a 2002 Audi A3 1.8T (KO3 sport turbo, DWB, VCT) and recently installed a chip. The car is stock standard except for the chip and it has a new green top coolant sensor, new OE Bosch 710N DV, N75J.
The car surges dslightly during part throttle (2800rpm-3800rpm) and I would like to...