I'm looking for a tuner that can adjust settings for speedometer/odometer settings that can accommodate 37" tires. I've looked into SCT and BDX and like both but SCT wrote back to me and said that they cannot adjust for that size because it messes with a factory vehicle safety setting or something. Didn't hear anything from BDX. Suggestions?

 

Try livernois

 

If you find one post it here, I'm planning on moving up to 37s this spring

 

I did some digging and found that Superchips and Diablosport both offer tuners with the capability. I believe they can adjust for tires up to 40”. My superchips tuner will be here Thursday!

 

I use a edge 3 on a 2006 4.6 2v
it will adjust Speedo up to a 37.5 but I have to change it to use the sport settings

 

Not really a tuner option... but I posted the info below for another member:

If you get to wits end and just want the speedo to work. Check out a Dakota Digital Box. They are only about $80 and work wonderfully. I had these problems with a 2006 F350. I had the dealer try to recal the ABS module twice, I tried with FORScan and even bought AutoEnginuity for whatever reason none of it worked. So I bought the Dakota, hardest part on my truck was taping into the ABS sensor from the ABS Module to the PCM. Not sure where the signal comes from on the F150s, but assume its similar. Very easy setup and simple Plus/Minus buttons to calibrate the speed as you go down the road.


Also assume you already tried FORScan?