JohnAlley

I have a 2005 Coupe automatic, it has had work done on by Livernois and is putting out add'l horsepower now. To help with the add'l horsepower I had a C5 differentail installed, Z06 halfshafts and a lower gear ratio. Now the speed displayed on the HUD and on the spedometer are 3 mph slower than actual speed. When I activate the crusie control it displays the correct speed on the DIC. Is this discrepency due to the change in gears and if so how to I correct it.

ErnieN85

any of the tuners can change that easily

JohnAlley

Thanks for the information, that seemed to easy I was expecting a more complicated solution