We had this truck in a couple of weeks ago for excessive black smoke and clutch slipping. The owner of this truck has not long had it and wants us to take a look at it.

When it came in last time all we had time to do was a quick road test and rebook. When the truck was road tested Mark my tech said its going like a scaled cat and the clutch was slipping at peak boost/torque. Mark suspected it had been remapped as he said the truck just went too well. Also the customer had a receipt for a clutch replacement just before he brought the truck. He also had a receipt from a tuning company which was very non descript.

The customer tells us that the ECU has been tested and is not meant to be remapped. So my question is does anybody know what boost pressure these are meant to produce so that we can at least test that to make sure that is correct. The truck isn't producing any fault codes so seems odd for it to be going this well without a remap.

Regards Matt