do i really need this?

how it works? is worth ?

 

I would say yes. If u plan on upgrading tires, gears, run lower tire pressure. U need it. The dealer will charge u over a $100 to correct the speedo. With the procal u can aline u steering wheel. I have one and I live it. Worth every penny. And it is real easy to use to.

 

ok I'll go up 34' tire.. but not the gear..

still do i need it?

 

If its an auto I'd get it without hesitation

 

If you want your speedo to read accurately and your odometer to be accurate, it's a well worth the $150
And if you have an automatic, the transmission will shift properly

 

I use mine for moving the DRL as I have HID's and DRL due to being in Canada. Also used it for air pressure and plan to use it to raise idle once I have my winch installed and get to use it. The steering wheel centering is rather pointless I find it tells you where the computer thinks is straight, not what is actual straight. You still have to do the steps of adjusting the steering wheel anyways so it doesn't actually 'center' it in any way.

 

Absolutely need it for an auto trans and larger tires.

 

I agree with everyone else!

 

Lol ok i just ordered