U7191 06 Trailbalzer SS - Change tire size??

[loweredd]

I have a U7191 I just got today so I could change the tire sizes after changing to a Yokohama Parada Spec-X 275-45-20 from the RSA turds 255-50-20. I don't see anything in the menu for changing the tire sizes......I cant find anything in the search either. I overnighted this because we are leaving for a 1200 mile trip in the morning, and I don't want to add a ton of undriven miles to the odometer.......WTH am I to do?

[06MonteSS]

nope, can't change 'em via the handheld... need to get a custom tune made...

need to post up a copy of the tune that's installed in your truck now, and also post up the original stock tire size, and the new tire size you're going to.

here's info about how to make a copy of the current tune that's in your truck right now:

http://diablosport.com/index.php?name=P ... pic&t=6547

follow the first 1-8 steps...

[loweredd]

This wont communicate with the computer AT ALL. I'm really starting to get frustrated with this thing............

[loweredd]

It won't work on ANY of the 5 COM ports, it says ComSetup Failed, Click OK.

[06MonteSS]

you have a serial to usb cable? did you install the usb drivers for it?

check in the windows device manager and make sure the cable is set to com port 1, 2, 3, 4, or 5.. and that the baud rate is set to 115,200...

then in the app, make sure the same number com port is selected in the drop down...

[loweredd]

I must have unstalled the wrong driver at first......let's give this a shot.

Now who do I email it to?

[loweredd]

Well, I talked to Pat at The Shop in Lincoln, NE, and he said email a copy to him, and he would change it for me. He said with the size change we did, he wouldn't bother doing it.......I dunno though, I think it will bug me all the time I drive it. Oh well. We'll see how it works. Maybe it's not that far off. I wish the Navigation would show MPH traveling.

[06MonteSS]

if your guys adjustment doesn't seem to work, post up your tune file here and ask the diablo guys to look at it...

but try your guy's out first, since he offered, heh.....