Hi everyone my name is Dekka and I am a new member who drives a p38 Range Rover 2.5 year 2000 and now tow a 2013 Swift Challenger 580 SE.I have just received the November magazine and on looking in the talking tow car section there was a letter from a Tony Perry regarding ECU remaps.Well I have fitted a chip box to my Range Rover from a company called TDI and after fitting it myself which was very simple transformed my car into a rocket ship by increasing the Break Horse Power by a extra 36 and also increasing the torque.BUT the best thing about this is the pulling power for the caravan so on motorways say you want to overtake lorry's put your foot down and instant power great.So if anyone wants to improve there motor why not check out information on the internet you will not be dissapointedOh before I go on towing my caravan to Newport Caravans I got 22 MPG on motorways and on returning solo I got 32 MPG not bad for a 4x4 2.5 ton Range Rover although this does not reflect in normal running around town driving.Dekka