Hi folks, Four years ago we took delivery of a new 2.3 JTD engined fiat based motorhome . I wanted more torque from the motor but remember its almost new under 3500 miles, so I called at Race Chip tuning in Germany and for the princely sum of 130 euros I fitted a Race Chip. 21000 miles later I am well pleased, the van has been emission tested at its mot and its fine, I did remove the chip for Fiat servicing while under warrantee, in conclusion I am well happy, its certainly increased the power up hills and towing a 750kg. trailer. Fuel wise its hard to be sure over 22 mpg up to 25 mpg would be my guestimate, but look at their website and decide if its what you want. From a happy little trucker.