boosted16

Yes, with the speedometer reading the proper speed and recording the proper millage on your odometer it will now properly calculate your MPG. I do currently have one speedometer calibration tool for sale

crockett56

Rough country now sells one that is gps based. For a lot less money. I just got mine, but have not tried it yet. Check out their website.

dominatorlp

Yes I am actually getting one included with my lift kit. I'll let you know how it works!

Anonymous1

No DTC if you use the hyper tech. Only with forscan.

boosted16

The hypertech I have does read and clear DTC

Anonymous1

Correct, He was asking if the hyper tech invokes a DTC upon use, like the forscsn tire size setting does.

boosted16

Oh, sorry. My mistake, you are correct its reads and clears DTC and will not cause any trouble codes with tire size corrected

Coercion Shaman

Let us know as soon as you have used it.

Wolperdinger

The wrench issue is a non-issue. From the doyen of FORSCAN "Livinitup": After making the change for the tire size, go in to the programming area and choose the "PCM Module Initialization/relearn vehicle data" option and run that. After that look in the programming area for anything with the wording like "TCM relearn" and if you see it, run that too. You may not have TCM relearn if FORScan determines your truck doesn't have a separate TCM module.
I did this on my 2018 and it worked perfectly. It takes literally 10 seconds or less to clear the wrench, and it doesn't come back.

Ritchie512

I'm having trouble finding a speedometer calibration tool for my 2018 F150 Lariat eco boost. Contacted Rough Country about theirs, but is will not work with eco boost for some reason. I have Forscan lite on my iPhone, but I'm not able to figure out how to do anything with the speedometer calibration. Is there any aftermarket tool that can calibrate the speedometer on 2018 eco boost F 150's?