I got a xcalibrator today mainly to adjust for my gears and tires and played around with it for awhile couldn't find anything to make adjustments to these things so I figured it would be in my custom tunes since I told the dealer all my mods. Took the car out and drove it and speedo is still off now I'm gettin pissed called the dealer didn't answer phone so I called SCT and they said you can only make these changes on 99 and up. Are they wrong or am I going to have to send this thing back? Being able to tweak timing and AFR isn't really worth $400 if I make changes for speedo too.