gear ratio issue

[jfhawk94]

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 surges and the speedo pegs itself at 155 then the car stalls. If I make the change in factory tune then save it, then escape without modifying the tune, then go to the install tune option I pick install factory tune, it installs and drives fine but the speedo is still off. With the stock tune modified and installed I check the car tune in the option section it says the diablo tune is installed. My car is a 99 trans am using model u7198 software rev 2.13 hardware rev 1.01. car mods are 04 ls6 motor custom cam ported heads, auto trans, strange 12 bolt 4.10 gears. car has a custom dyno tune, but like I said I only got this to change gear and tire settings not fuel timing or anything tuning related

[dobert]

I have the same issue. Did you get your programmer from slp?

[jfhawk94]

No got it through auto anything shipped right from diablo sport

[jfhawk94]

back up file sent to Mike, fingers crossed.

[mikel]

I got the file, should have a new tune back to you today.

Thanks

[jfhawk94]

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.

[mikel]

No prob, glad we got it squared away.

Thanks