Just looked at my fuel slips, didnt fill it to the brim, just when the first stop on the pump.
Looks like my first one which included a bit of running with the new Sdi's and when he did the remap, I got 45.63 mpg.
After the remap and the new SDi's 38 mpg. thats over 545 miles. Mix of motorway and round town driving 2/3 motorway roughly.
What I thought, just a matter of deciding if the extra whoooomph and the 234 ft lbs torque, plus grin are worth it.
Yeah!!!!!!!!!!!! its worth it!!!!!!!!!!!