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Superchips Flashcal (18-20 Jeep Wrangler JL)

Item J125938-JL
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$249.95 (each)

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    Features, Video & Details

    • Optimizes Performance
    • Recalibrate Suspension, Tires, Gears and More
    • Full-Color High-Definition 2.80-Inch Display
    • Adjust Your Gear Ratio from 2.73 Up to 5.38
    • Set Transfer Case from 2.72 to 5.00
    • Adjust Tire Size from 25-Inches-40-Inches
    • Turn TPMS, One Touch Lane Change, and Auto Park On or Off
    • Switch on Fog Lights and Daytime Running Light Dropout
    • Decodes and Clears Diagnostic Trouble Codes
    • Internet Updateable
    • Mac and PC Compatible
    • Designed for 2018-2020 Jeep Wrangler JL Models

    Review & Installation Video

    Review & Install Video

    Modify and Optimize Your Jeep. Modify and upgrade your Jeep to your heart’s content without worrying about updating your onboard computer with the help of this Superchips Flashcal device. This user-friendly hand-held tuner features a clear 2.80-Inch display with a simplified tactile navigation that lets you change and adjust various settings on your Jeep. The device allows you to maintain accurate speedometer readings, diagnose engine trouble codes, and more.

    Importance of Recalibration. It’s extremely important to recalibrate your onboard computer after a lift, tire upgrade, or gear change. Not only will these changes affect speedometer and odometer readings, but it will also result in a sluggish performance because of the incorrect shifting points.

    Device Features. The Superchips Flashcal comes with a full-color HD display that measures 2.8-Inches. Compared to other devices, this tuner is sleek and modern much like a cellphone. The device comes with a jumper module that connects your Jeep’s gateway port. The device then connects to the module via the OBD II cable.

    User-Friendly Interface. The Superchips Flashcal contains a simplified menu with 3 main selections – Options, Scan, and Info. It is designed to include only the most common settings that need updating. However, if you wish to include the advanced performance tuning, you can upgrade the device by going to the manufacturer’s website and pay to download the additional options.

    Superchip Flashcal Adjustable Parameters:

    • Corrects Speedometer for Tire Ugrades between 26 to 40-Inches
    • Speedometer Recalibration for Gear/Axle Swaps up to 5.38
    • Transfer Case Gear Low: 2.72 - 5.00
    • Swaybar Disconnect in 2HI (up to 25 MPH)
    • Daytime Running Light Options
    • One Touch Lane Change: On/Off
    • TPMS On/Off
    • TPMS Adjust
    • Fog light Dropout: On/Off
    • Daytime Running Light Dropout: On/Off
    • Daytime Running Light Location: High Beam, Low Beam, Turn Signal, Fog Lights, European/Fender Lights and None
    • Auto Park: On/Off (Applies to 3.6L Models Only, as it uses a feature while device is plugged in)
    • Reads and Clears Diagnostic Trouble Codes
    • Internet Updateable

    Compatible With Common OS. The Flashcal is compatible with current Windows and Mac OS operating systems. Simply connect the device to the Internet via the USB cable to download software updates.

    Application. The Superchips Flashcal is compatible with 2018-2020 Jeep Wrangler JL models.

    Fitment: 2018 2019 2020 Details

    MPN# 3571-JL

    CA Residents: WARNING: Cancer and Reproductive Harm -

    What's in the Box
    • (1) Superchips Flashcal F5 With OBD II Cable
    • (1) Jumper Module
    • (1) USB Cable
    Installation Info

      Customer Photos (6) Submit Your Photo

      View All 6 Photos

        Questions & Answers (10)

        5 Top Rated Questions

        Can this turn off the auto start/stop function?

        • This cannot disable the auto start/stop function.

        Helpful (9)

        Is the F5 compatible with or useful if you have a6 sod manual trans as opposed to the 8spd automatic?

        • Yes, the Superchips Flashcal F5 is still compatible and usable with a manual transmission. It will still adjust your gear ratio and adjust for your new tire size to help make sure your computer is displaying accurate reading in terms of MPG and/or speed. It also still does all the features of TPMS, Transfer Case, Sway Bar Disconnect, Lane change, fog light, etc.

        Helpful (2)

        What did she plug in, in the video before plugging in the Superchips. Is that included in the box?

        Am I able to use this (1) flashcal on both my JL Jeeps? Or do I have to buy 2 of them?

        Will this enable DRL's for my JW Speaker Evo J2 headlights?

        • This would not enable the use of DRL's on your headlights.

        Helpful (0)
        Post Your Question
        5 More Questions
        Do you have to leave this plugged in? We have two JLU’s and need to recalibrate both speedo’s. 1 answer
        will this work with after market axles? 1 answer
        Hi. How about Halo lights - enable or disable option ? 1 answer
        I install my auxiliary switches myself. Does it have the feature to flash/ turn this option on within the Uconnect system? 0 answer
        Do u leave the module bypass plugged in ? (The two wires u have to unplug ) 1 answer

          Customer Reviews (22) Write a Review

          Ratings Summary

          4.5 out of 5 overall rating from 22 customers

          Installation Time: Less than 1 Hour

          • January 16, 2020

            5 2018 Wrangler - KennethH Installation Time: Less than 1 Hour

            My transmission is happy!

            Installation was a breeze. Disconnecting the connectors was fairly easy--use your finger on one hand to depress the retaining clip and the other hand to pull the harness. It took less than a minute. After calibration my tire size from 31 to 33.25, now my transmission shifts on point, before the calibration, it wouldn't shift beyond 7th gear. My Jeep is happy, it doesn't drive sluggish anymore!

            Helpful (0)
          • December 28, 2019

            5 2020 Rubicon - Irish Installation Time: Afternoon

            Easy to Use

            Flashcal F5 is easy to use. However, installation of the module in the JL was very difficult. Pulling the two connectors proved to be challenging do to their location.

            Helpful (0)
          • October 13, 2019

            5 2019 Rubicon - Alvaro Installation Time: Less than 1 Hour

            Great Programmer!

            I had to buy the Superchips Flashcal F5 for my 2019 Jeep Wrangler Unlimited Rubicon because I changed my rims to 22 inches and my tires to 37 inches . I was driving my vehicle without programming it and it ran rough ! Once I changed the dimensions with the flashcal immediately the vehicle ran smooth! I also was having TPMS issues so I decided to turn off the TPMS. If you do any modifications to the tires . You will definitely need this equipment. Very easy to install ! Just take off the middle panel. There is a video also! Highly Recommended! Also I noticed my MPG went up by 4 mpg!

            Helpful (1)
          • August 14, 2019

            5 2018 Wrangler - Nasfaratu Installation Time: Less than 1 Hour

            Works great

            Picked the superchips because of the included device for changing values. Very simple to use. Set tire size to 32.25 for 285/70-17. Speedometer is right whete it should be. Also removed the seatbelt chime which is a fantastic option.

            Helpful (1)
          • July 10, 2019

            5 2018 Wrangler - Jeep 18JL Installation Time: Less than 1 Hour

            A Must have

            Very easy to install. User friendly, easy to navigate through the options and a must have after you have lifted your Jeep and are running a bigger tire setup than factory. They also offer more content for download on they’re website.

            Helpful (0)
          • June 28, 2019

            2 2018 Wrangler - Byebank Installation Time: Less than 1 Hour

            Not as great

            For the price I feel like it should have more options and also better quality after I used this tuner my dashboard sometimes looks like a Christmas tree all my lights turn on and the flash cal reads a bunch of codes and I’m for sure is not my Jeep because is brand new. Waste of money for me but might be well worth it for some of y’all

            Helpful (0)
          • May 15, 2019

            5 2018 Wrangler - BrandonJ Installation Time: Less than 1 Hour

            Must have after lift tires

            So the dealership wanted $200 to just change the tire size to correct speedometer/odometer. For just $50 more, I got this Flashcal F5 and was able to change tire size to get shift points back to normal, turn off seatbelt chime, tell my ECU that I have LED bulbs in my tail/reverse lights, disable the one-touch lane change option, adjust TPMS threshold and turn off wile wheeling when they're aired down to 16psi. Then the running options, mainly bumping up engine idle while winching or airing up to give the alternator a little more oomph. It's a valuable tool for sure. Simple to install, less than 1min, if you pay attention. Some folks have trouble with the bypass, disconnecting the 2 harnesses. It's a simple, one-handed install if you just look at the harness. Get one!

            Helpful (1)
          • May 10, 2019

            5 2019 Rubicon - Poolman29910 Installation Time: Less than 1 Hour


            Website is easy to use. Gives you a lot of option to modify your Jeep.

            Helpful (0)
          • April 22, 2019

            5 2018 Wrangler - Gordon Installation Time: Less than 1 Hour

            Worth the money

            Easy to install and use. Simple instructions and easy to read display on the unit itself.

            Helpful (1)
          • April 09, 2019

            5 2018 Rubicon - AdrianP Installation Time: Less than 1 Hour


            Super simple. Just spend the money, the customizable options are pretty cool. Hopefully they add more later with updates! Note: It’s a bit** getting the two connectors out to install the bypass. Once that’s done it’s done.

            Helpful (5)
          • April 08, 2019

            5 2018 Wrangler - James

            Easy to use

            It does exactly what it says and is very easy to navigate.

            Helpful (0)
          • April 01, 2019

            1 2018 Wrangler - Puisjeep Installation Time: Less than 1 Hour

            Didn't work

            Even though the chip is supposed to work for the JL, ours created a conflict in the software, causing our autostop/start and our backup camera to stop working. Only happened after driving for a short time, dealer said it was due to a conflict between the speedo and the actual speed. Had to take the jeep to the dealer to have it re-flashed. Extreme Terrain was great about refunding our money.

            Helpful (3)
          • February 12, 2019

            5 2018 Rubicon - CameronS Installation Time: Less than 1 Hour

            Nice Unit

            Quality built recalibration unit. Easy to use. Recalibrated my speedometer and got my shift points back on line. A bonus it it can be upgraded the Flashpac when ready.

            Helpful (5)
          • February 11, 2019

            4 2018 Wrangler - Jenna Installation Time: Less than 1 Hour

            Works great for speedo

            Bought this one because of the great reviews. It is super easy to use and works well to fix speed with larger tires. Even with all the proper updates I Ran into and issue when adjusting the other settings (stop start) and my remote start wouldn't engage. Turned my start stop on and it works fine again.

            Helpful (5)
          • January 12, 2019

            5 2018 Rubicon - JCMartin


            It’s a breeze to use. Love this thing. I have the new JL model. Just unplug two wiring clips. Plug into bypass. And then your rocking. You can even turn off that stupid autopark feature.

            Helpful (8)
          • December 15, 2018

            5 2018 Wrangler - KevinS

            A plug for the Flashcal

            Super useful and easy to use. Worth its weight in gold for anyone going to a different tire/wheel package or a change in gears.

            Helpful (7)
          • October 30, 2018

            2 2018 Wrangler - DS Installation Time: Less than 1 Hour

            Expected it to do more...

            Ended up being an expensive speedometer calibration unit.

            Helpful (9)
          • October 16, 2018

            5 2018 Wrangler - KelvynR Installation Time: Less than 1 Hour


            Great tool!!! Specially when you get bigger tirers. Helps a lot to recalibrate your speedometer and got my mpg back to normal again!!!! Highly recommended!!!!

            Helpful (9)
          • October 08, 2018

            5 2018 Rubicon - ScottD Installation Time: Less than 1 Hour

            Flashcal Was Just What I Needed

            After lifting my JLUR 2 inches and putting 37" tires on it, the Flashcal was just what I needed. It is super easy to use and update. I was able to adjust my speedometer and tire pressure settings with not problems. I'm still checking out the other features for additional setting changes.

            Helpful (8)
          • October 02, 2018

            5 2018 Wrangler - TaylorS Installation Time: Less than 1 Hour


            Simple and easy to use. Needed it to recalibrate speedo for 35 inch tires. Works great

            Helpful (8)

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