Does anyone out there know if it can be done or how to do it?
I lowered the truck and then went slightly taller on the tires to really fill the fender openings. Truck looks great now but my speedo is off.
I knew it would happen, but I figured I could live with it. I've changed my mind and want it to read accurately.
Can this be done by changing a gear in the transmission or does it have to be done through the ECM?
Just some background on the truck....Supercharged 5.4 with JDM underdrive pulleys and idlers; elec fans, 3.73 gears........nevermind ...list is too long!
Lemme know if you can help!