I got my AEV Procal and it is very easy to use. I've used it already for my tire size and it seems to have fixed my speedo. Do I need to set it to my new 513 gears if I have a manual transmission? Or is the new gear ratio only needed for auto's so that the auto transmission knows when to shift? Why do I need to enter new gear ratio with my 6 speed manual?

 

I have a manual as well. You use the ProCal to set the gear ratios and tire size so that your odometer and speedometer will read accurately.

 

Ok I got ya. Can I use the Procal to shut off ESP or will I have to put a manual switch in like posted on other threads?

 

I don't remember the Procal being able to shut off ESP. It's been a month since I programmed my Jeep so I'd have to look.

But that begs the question, why do you want to disable ESP? You've got a button for it on your dash already. If you need to disable it for offroad use, use the button. It should turn off in 4-low anyway.

 

I think the main reason you need to recalibrate the gear ratio if you changed gears in a manual is so your esp works properly. I think with all the sensors if anything is out of wack you can have codes etc.

 

I want ESP off bc with larger tires the ESP turns on when it doesn't need too. Like in tight corners etc. I've noticed it a lot when I went up to 33s. Now that I'm putting on 37s I'm assuming this will be exaggerated that much more.

 

There's no need to change the gear ratio in the computer with a manual transmission. Speed is sensed through the wheel speed sensor. ESP doesn't factor gear ratio.

 

Most likely the steering wheel isn't perfectly centered. Using the centering feature of the Procal with the Jeep on an alignment rack will get it perfect. I have 35s and 2.5" lift and never get the ESP activation in turns like some report.

 

Yes it has gone down drastically after centering my steering but would like it off completely