The Tru Speed Speed Signal...
The Tru Speed Speed Signal Calibrator is easy to install and fairly easy to calibrate. There are a few charts that will tell you the amount of turns you must make on the adjusting screw to correct for bigger tires, regearing, or a combination of both. It may then be necessary to fine tune your vehicles speed by either using a GPS or by zeroing your tripmeter at a mile marker sign, driving by 10 or 20 markers, and then correcting for the amount your tripmeter is off.
Tru Speed will also restore...
Tru Speed will also restore your automatic transmissions shiftpoints by fooling the computer into thinking that you have stock tires and factory ring-and-pinions. This may help with gas mileage and towing ability. There are also two different settings, so if you run some 35-inch All-Terrains on the street and 36-inch Swampers on the trail you can have both calibrations for proper speed readings at the flip of a switch.
So you are driving down the highway en route to your favorite wheelin trail when you see Chief Wiggum in his cruiser going the other way. Calmly you remove your foot from the gas pedal in hopes that gravity and 35-inch mud tires will help you slow down before its too late. You dont think youre speeding, but you may be. The bigger tires on your Jeep have thrown off your speedometer, and you are getting tired of doing the math involved in guesstimating your true speed. Well now Superlift has a new electronic widget designed just for your late model Jeep that will tell you your exact speed no matter what tire/ring-and-pinion combination you have.