Getting ready to get a leveling kit or lift, along with larger tires. Wondering what is the most popular method of speedometer correction for the larger tires. My searches didn't get the best results. Not to mention, I would rather not have issues with my 10 speed hunting for gears between 8 - 10.


2017 lariat screw, magnetic, 3.5 ecoboost, less than 1k miles on it

 

I would try the new superchips flashcal.

 

Thanks... looks like a good option. Has anyone used it on a 2017? I'm getting conflicting information from the superchips site and American muscle site. Superchips site doesn't list it as working for my truck, while the American muscle site says it does. I'll call on Monday and give an update.

 

I'm in the same pickle with tires too.

I called SCT the other day.. It WONT WORK.
As of right now there are no working sct devices available for our trucks. There will eventually be a software update for all the flash devices and eventual custom tuning, no idea when tho..
I have an SCT X3 and edge CS, I can confirm that both devices are completely useless right now..... sucks.
I was willing to buy the SCT X4 but that won't work either.

Maybe Forscan will work???

 

If you go on the superchips website and click on the news link scroll down and they talk about the flashpaq and flashcal new releases for the 2017 3.5 eco.

 

Apparently this Hypertech will work for a 2017 F150

http://www.jegs.com/i/Hypertech/533/730125/10002/-1

 

Don't think Hypertech has the 2017 3.5 Eco version just yet.......

 

Every dealer around me sells overpriced lifted f150s with larger tires as part their packages. What are they doing to recalibrate? I can't imagine that they are able to release a new vehicle with a Speedo that is off and possible shifting problems due to improper speed being read by the ecu?

 

That's a good question. If it isn't a ton of trouble, go in and ask one of them.

 

This is the only option I could find:

http://www.jegs.com/i/Hypertech/533/730125/10002/-1

Doesn't say in the description but this is an inline speedo calibrator. That small module with the 2 plugs plugs in behind the instrument cluster and looks to be a real pain to install, based on the installation document I read. There has to be an easier way.