Hi, my first post on here. I have a Mercedes C220 CDI 2009 model which I had remapped last year. The dyno figure, premods, was c. 167bhp / 312 ft/lbs torque. Afterwards - 202bhp with about 369 ft/lbs torque. I have to say it transformed the car and can thoroughly recommend it. There have no been no downsides, even the mpg is still good - it averages 40 mpg but is mainly used on local runs in a hilly area.
Anyone else have a view on diesel tuning?