Australia 7th Dec 12 Hi Andrew, I have fitted the chip to the Mercedes C250 CDI and have it on program 1 +10%. Difference is very noticeable. No lag when accelerating from a standstill. Serious amount of extra torque and pulls hard and fast right to max revs. Acceleration in the top three gears is extremely impressive as a result. No need to over rev the engine to get brisk acceleration. Simply change up a gear and let the extra torque put a smile on your face. Overtaking in the 80-120Kph range is incredible, you are around the slower vehicle and back on the safe side of the road in reduced time I have put the Landcruiser LC200 back to program one but with + 20%. It has a better more linear power delivery than program two and starts to come in earlier. Much better performance off the line and then a smooth but strong surge all the way to maximum revs. Very user friendly in stop start traffic and not much beats it once the lights turn green. Much to the surprise of some drivers in sedans or sports type vehicles J Thanks for the great service and advice. P.S. Couldn’t dyno the cruiser due to constant four wheel drive. I will have to look for a shop with a 4 wheel dyno.