Add Wish List Quick view Choose Options RaceChip XLR5 - BMW Z4 (E85-86) (from 2003) 3.0i (231 HP/ 170 kW) Next-gen throttle response for your BMW Z4 (E85-86) 3.0i 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