im going to 33 inch tires,what do i do about the speedometer?will it put more or less miles on my jeep?i have an automatic will it mess up transmission? do people do anything about this?? also im not putting in tpms sensors,is this a big deal?

 

Your speedometer will read slow. If you want the speedo to read correctly, there are calibrators that you can buy. Or if you go with a programmer, they also will calibrate for tire size.

If you don't put the TPM sensors in, your Jeep will constantly complain every time you start it. And by law, the dealership cannot remove the functionality. Although with some programmers, you can adjust the air pressure down to zero. And then just keep the sensors in the jeep some place, and it should be ok.

Otherwise you should be fine, except the tires will rub offroad if you disconnect the front sway bar.

 

Get the Pro Cal to adjust speedo or get the Superchips or Hypertech programmer to not only calibrate tire/gear ratio changes but also access performance tuning on your Jeep. I picked up my Superchips from Northridge.

 

the computer will complain? what will it do?also it will rub offroad?? im putting in a 2.5 coil lift,will it rub with this lift?? thanks

 

you will put less miles on your jeep. and like above it will read about 3 mph less than actual speed. you should be fine but if you are removing your tpms too i would invest the 125 bucks in a aev procal. you can turn off tpms and adjust your speedo. the nice thing about the procal is you don't have to worry about your dealer giving you crap cause it is not a programer like superchips, hypertec etc.... it also does a few other cool things. it is cheap and well worth the money. your trans might not shift as soon as it should either but that will be fixed by the aev as well by adjusting your speedo.

 

no you should not have rub with that lift and 33's unless you have the wrong backspacing and running a wide 33. the computer will make a chime and your tpms light will stay lit. it is anoying and that is why most people turn it off with a programer or the procal.

 

aev procal it is!! it will fix speedo,tpms light,and make sure transmission is shifting right?? also can i use it or do i need someone to do it for me,how hard is it to use the aev procal??

 

it is so easy i let my 7 year old help re cetner my steering wheel.

 

it might take me a couple days to get it shipped by northridge,will my jeep be ok til i get it recalibrated,i dont want to ruin transmission,and its a 2010 sahara,will it work on it??

 

Yeah, very easy. Just flip some dipswitches according to the instructions on the quick reference sheet and plug it in. Just make sure the ignition only is on and not the engine.