I service and look after a small fleet of cars for a local bus company

They taxi spare bus drivers around in these cars and they are well abused.

My problem is a 54 plate TDCi Focus.

It is ripping dual-mass flywheels and clutches apart every 5000 miles

The bus company purchased the Focus with 42,000 miles now got 58,000 and its in again for its 3rd flywheel/clutch

This particular Focus is too powerful for the numerous drivers who jump in it and my question is this :-

How can I de-tune this car as the bus company owners are fed up with the"down-time" of this car.

A strange question I know but I need it to be less powerful - lol lol