Hdi mapping software/vnt ecu control

[jammapic]

You don't need to checksum it unless you are going to write it back to the car. It matters a bit less these days anyway, as mpps checksum corrects of a fashion anyway.

And therein lies the black magic of mapping. What do you change? What don't you change? Which maps do what and how do you find the maps? Along with that you've got single byte limiters and switches which do different things...

JP