@s0dhi Di you have a DDFI3? I just used excell to get the maps in the correct values, then took the thing to a text editor to make sure the spacing was correct, and switched out the values. I then just loaded them into ECMSpy, and uploaded... no issues. the Cooling I am seeing is a factor of the maps on the stock ECM which I am working on solving. I have a BUEZD and my fuel map is great atm, a bit of popping on decel, but overall great performance. If you need I can share.