RS4
Superchips Bluefin have a great stage 1 ECU tune & ECU remap for the naturally aspirated Audi RS4.

Special Price $775.00 30% SAVED Regular Price $1,100.00
Superchips Audi RS4 4.2 FSI Quattro ECU Tune & ECU Remap (331 kW)(Sep-12 onwards)