Speedboy

Which should I purchase? JK Hypertech Speedometer Calibrator OR AEV ProCal Module Thanks

Speed

w squared

Depends on what you want to do. What mods do you plan on getting? How will you use your Jeep?

captjay

well they both will recalibrate for tire size which recals the speed and both will recal for gear ratio,
pricewise the procal is cheaper. the average person doesnt need all the other features on either one of them. so as the other guy says, depends on what u will do with your jeep.
i have the Hypertech Max Energy Power Programmer at nearly $400 and i have used maybe 3 of the many many features it has. but at the time, there were not as monay options for programmers