remapping

I have a W211 July 2003 E220CDI. I am considering getting the thing chipped or Remapped. This would according to the info on various sites take the max power from 150bhp to between 170 and 180 bhp. However my main reason for doing this is improving mid-range torque and power so when I am...

Hi everyone. I have a c230k sport and am thinking of having the ecu re-mapped to a performance map, still within engine tolerance (not touching the rev limiter) ect, in fact not touching the ecu at all, but through the obd port. Ive been informed that it will give me a 25% to 30% :crazy...