In the right hands, it can mean a lot more power without much effort. A simple $1,200 remap on this 2017 Audi RS3 unlocked an extra 100 horsepower and quicker shifts, almost putting it on par with ...

German tuning firm MTM has recently turned its attention to the 3.0-litre V6 BiTurbo diesel engine in the A6. The company has re-mapped the ECU to produce 376bhp and 575 lb ft, up from the ...