I have just bought a 3.0i x5 which has got an lpg gas kit fitted,i drove it back on gas around 60 miles it drove well but noticed later that the engine fault light was on (emmision control) i have heard that this can come on when driving on LPG but thought i would ask if anybody else has had or know anything about this,thanks Dale i have also got a pixel problem on milage part display any ideas or fixes welcome ??