Can't get my tires size calibrated with Superchips. Any thoughts?
11-09-2017, 08:59 AM
#12
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Join Date: Oct 2017
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Mine worked fine, but i was reading reviews before purchasing the chip and some people had to download an update that would fix your problem. I think they had to call customer support to get the update, not 100% sure.
11-09-2017, 09:09 AM
#13
I just had trouble using a flashcal with my 2017 3.5 eco. It kept saying it couldn't communicate with my truck. This is after having 5 Star tuning send me a HP Tuner that didn't work first. Superchips Tech thought maybe my tune was interfering with the speedo calibration process. Finally found where the latest version of Forscan has a module relearn process that allows you to change tire size and remove the wrench lights afterwords. I'm running 285/65r20 BFG K02's and my speedo is matching up perfect with GPS. SUCCESS!
Whoah... so I was under the belief that on my 2017 if I adjusted the tire size with forescan I would have a wrench (CEL). This has been fixed in the latest version of forescan?
Please say it be so!
11-09-2017, 09:16 AM
#14
Junior Member
Someone else PM'd me about the process for my tire size (285/65r20 BFG K02) so I am just repeating here for everyone else. In the BCM section of Forscan, I changed 726-12-01 to xxxx-0A47-xx (don't change whatever values are in the "x" locations). It will throw a checksum warning when writing, ignore it and Forscan will fix it for you. On next start, you will get a service wrench warning that doesn't go away. You must go back into Forscan and do a PCM & TCM relearn, this will clear all error codes from changing your tire size.
Reminder to everyone. The value I used is for my tires size only. This number can be generated from the spreadsheet in the Forscan Guide (in the sticky thread) at line 726-12-01.
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EcoBooster71 (11-09-2017)
11-09-2017, 12:35 PM
#15
I just installed the Hypertech speedometer calibration programmer this morning. Then went for a short drive with no issues. I wasn't interested in a full tuner, so this worked perfectly for me on my 2017. It was a little pricey at $229 shipped. The box says 2015-2017, but the scanner menu only listed 2015-2016. Worked flawlessly.
01-13-2018, 08:06 PM
#16
Thanks to God & Guns I used Forscan to correct the Speedo on my 2017 Lariat Eco 3.5 with 10spd. Wrench was triggered after I wrote the file, but it went away with the TCM and PCM relearn. Easy as can be with only $20 for the USB Elm327, plus no removing the cluster to wire the calibrator in.