Just downloaded and installed the new tune, speedo is right on. Plus they sent me another with new tranny settings, going to try it soon I'll post up how it worked. Thank you to Mike and the rest of your staff for the great product support.

back up file sent to Mike, fingers crossed.

No got it through auto anything shipped right from diablo sport

I bought the programmer mainly to fix my speedo due to gear and tire changes. I have not changed the tires yet but went from 323 to 410. I go to factory tune and modify the gear ratio then install modified tune. Once it is installed when I put the car in drive and take my foot off the brake the idle ...