im doing the lift on my 03 f150 supercrew and im going to put 37's with 4.88 gears. do i have to get a programer or will the shift points be ok for a little while till i can save up the money cause the lift, gears, and tires are going to tap me out.????..

 

It won't be a Killer F-150 untill it has a programmer.

 

Shift points will be fine. Just know how far the speedometer will be off and make the mental correction for that until you can afford the programmer.

 

What's your stock ratio and tire size? Divide new ratio by old ratio and new tire diameter (37") by old diameter. If that number is greater then 1, subtract 1 and multiply by 100. If its less then 1, subtract that number from 1 and multiply by 100. This will give you the percentage error for you speed sensor / speedometer. If its under about 25%, you should be OK for a while until you scrape together a few hundred for a tuner.

 

so i coult get a new gear for the speedo and correct the differance and be fine tho right?

 

just dont put the gears in til you get a programmer?

 

Only 97-98 can change the speedo gear. 99 and up is controled by the computer.

If u dont want a progammer u can go by FORD and they can reflash the computer for the gear change.~$80

 

oh man thank you now that sounds like a plan im going to head to ford as soon as im done

 

Yea go by a dealer if you don't have money for a programmer right now. you should eventually get one tho IMO just to regain a little power you are losing from the big tires and stuff. plus the if you ver change tires sizes or gears again you can reprogram is just a couple minutes. and btw, the dealer will only have certain options that they can select for gearing and tire sizes, they won't be able to reprogram for 37's and they can't just enter a custom gear or tire size. its a small list of options to choose from, if i remember right they can only program up to 285/70 17 for tire sizes (at least that was the biggest option for my 01). I've plugged in the ford laptop before to play with it and see what all can be programmed is how i know.