Originally Posted by JSAN
So I uploaded the program to the ECM. First I went on the computer and updated the programmer and then Selected 2007 to 2010 3.7L Engine option and it updated it.
Then I went to the Jeep and installed it. First it gave me an error after the copying process (before writing) and told me to restart it.
After restarting it, it installed fine.
There is a very obvious difference in the acceleration. It accelerates pretty quickly now and even idles at little less RPMs than stock.
However My ESP light and traction control symbol stay lit in the instrument panel. What could be causing this?
I changed my tire size from 29.25 to 30.5. And kept everything else stock, in the programmer. anyone else have this problem?
I know close to NOTHING about tires, but if the tire size you have now hasn't changed much, and the speedometer is correct, don't change the tire size on the Hypertech. You shouldn't have any lights illuminating. You can call them or contact them VIA Facebook.