I just this past friday re-geared to 4.88 and in limp mode now. I had an issue with flashcal not working 5 weeks ago to re-calibrate my 35" BFG KM2's. I tried several settings and no luck, it sent my Jeep into limp mode every time. I tried a co-workers flashcal and it worked fine, no limp mode. So I sent my Flashcal back to 4 whell pts for an exchange. I recieved the new Flashcal and same problem occured, limp mode. I even tried adjusting tire size only! Got on the phone with Superchips and they wanted me to go sit at a computer all while sending me downloads to try but, I don't have or have access to a windows based computer, I have a Mac. I convince them to refund my money and drove for weeks in factory settings with only a slight speedo off-set. Now with the gear change this is not gonna do because it is now in limp mode, stuck in 3rd gear. My co-worker come over with the flashcal that was successful before, we set the gear ratio and tire size thinking it would work again, and if it did I would buy it from him. It did not work, we tried for a couple of hours, to no avail. I would like to order a AEV procal but am skeptical? I called 2 of my local Jeep dealers Saturday but they tell me they can only flash factory settings. I'm not sure what to do, this is my daily driver. HELP!!!

 

I think for the quick fix I'd get the Procal , obviously if you don't have windows to down load anything for flashcal or flashpaq they don't do you any good. I would just get you rig going with the Procal for now, especially being DD.