Quote:
Originally Posted by bkscott
Anyone know if they only change the speedo or do they reflash the entire program. I am asking because I have a tune, and I don't want to lose it.
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This is how mine was done:
My custom tune was downloaded into a file. Then using that saved file - the table for the gear ratio was updated by writing 3.91 over 3.45. Then that file was saved under a new name and uploaded to the ECU.
Doing it that way prevents anything else changing on your custom tune. And just in case - you have a copy of your original custom tune saved to go back to if per chance something doesn't work right when you upload the new file with the gear change.