Interesting... My in-dash Speedo does not change at all. And I didn't expect it to, as it is an analog gauge that I assumed was purely mechanical gear driven. But to be honest, I don't know?? Could be fly-by-wire like the accelerator? In any case, mine stays at 66mph on dash when I'm at 70MPH on both BDGT & GPS.doctahjones wrote:on the bully dog, i did some tests with that speedo correction...if you change the setting while the car is running, then yes your speedo and bd will be different. but if you leave the setting and restart your car, the speedo will match the new bd setting.
But, I have the BDGT: 50-State GT Gas (40410) not the GT Gas (40415), as that was the only model my shop had in stock.
At site yesterday so here is a before/after lift. I like it.. beefier without getting too jacked. Next item roof basket that I can stand on.... and I'm no small guy..

