Add Wish List Quick view Choose Options RaceChip XLR5 - Audi A8 (4E) (from 2002) 4.2 FSI (350 HP/ 257 kW) Next-gen throttle response for your Audi A8 (4E) 4.2 FSI The RaceChip XLR5 is our latest throttle response controller with advanced calibration and ultra-precise response curves. The most refined... RRP: Was: Now: £199.00 - £249.00 Choose Options Compare