Has anyone used SpeedCal? If so is it easy to use and how does it work? How do you install it ect.? I'm looking at getting 4.10's and am thinking about getting SpeedCal to fix the speedo. Thanks!

 

Have one and it is honestly a 15 min install.. It's just plug and play basically, once it's in, you don't mess with it again.. The instructions are very clear on what you need to do it get it moving. And it is dead on for accuracy.

 

I agree...when i had my 4.10's put in I also had the speedcal installed...my speedo is dead on

 

would it be a good idea if I dont use the stock tires size? how does it tell what you get?

 

check the dallas mustang website.. The speedcal can correct for gear swap and tire changes..

 

Yep, that's where I got mine too. Like the other guys said, dead on and only a 15 min. install. There's also a calculator on the DM website that can configure a code for modifications w/ tires, speedo correction gears, gear swaps and other things that may set off your speedo...

 

Really easy. Just dip switches that need to either be set to one or zero.. go to their website get the code (it will tell you in order from left to right what position), set it to that and its corrected. The install is purrty easy as well.

 

i thought the speedcal's only work up to the 98's no? thought you needed a tuner after that. or im thinking of something else...

 

they work on 94-04 manuals... and 94-98 auto's...

 

alright, it was the auto thing that threw me off.