JKS J-Cal Programmer

JKS J-Cal Programmer JKS J-Cal Programmer JKS J-Cal Programmer
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  • JKS PWT3575

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JKS J-Cal Programmer

The J-Cal Programmer from JKS Manufacturing is a must have for any 07-16 Jeep JK Wrangler owner who is looking to make the most out of their build. Whether you're using your JK as a daily driver or hitting the trails of Moab every weekend you've probably noticed there is no factory option to easily recalibrate your speedometer after upgrading your tire size and/or gear ratio, and that there are some quirks that could be improved with the factory JK electronic systems. Rest assured the J-Cal programmer from JKS is the perfect solution to these problems, and more!

The J-Cal programmer is an easy to use, digital screen, handheld plug-in programmer that is capable of correcting your speedometer for tire sizes up to 42", and for gear/axle swaps up to 5.38s, with many other features built-in to improve the on-road and offroad performance of your JK Wrangler. Does your JK have a winch and you'd like the ability to adjust the engine idle for optimal winching performance? The JKS J-Cal can do it. Do you have a Rubicon model and want the ability to use your locking axles with the transfer case in 4-Hi & 4-Lo? The JKS J-Cal can do it. The J-cal programmer will also give you: daytime running light options, a "One touch" lane change feature, and give you the ability to read and clear diagnostic trouble codes. On certain JK models, you can even re-calibrate and optimize the ESP stability control system for non-stock tire sizes (11-16 auto trans models only), download an add-on to correct the TPMS system, set a custom headlamp delay, and change the horn chirp and exterior lighting flash options for when locking the doors with keyless entry. Add in the fact you can update the software via internet, and can purchase a downloadable upgrade to have performance tuning abilities on 07-14 models, and you'll understand why the JKS J-Cal programmer needs to be the next upgrade on your JK!

Product Features

  • Corrects speedometer for tire sizes up to 42"
  • Speedometer recalibration for gear /axle swaps up to 5.38s
  • Locking axle options with transfer case in 4-Hi & 4-Low (07-16 Rubicon only)
  • Engine idle adjustability for winching
  • ESP stability control re-calibration and optimization (11-16 automatic transmission models only)
  • Daytime running light options (07-16 models only)
  • Horn chirp and exterior lighting flash options when locking doors with keyless entry
  • One touch lane change
  • TPMS Options (Download required)
  • Radio delay options (11-16 models only)
  • Headlamp delay options (11-16 models only)
  • Reads and clears diagnostic trouble codes
  • Internet updatable
  • Upgradable to allow performance tuning (07-14 models only)

Important Notes

  • Results and features may vary based on vehicle make, model, and aftermarket upgrades. Read all instructions before installation and/or operation of this product use.

This product fits the following applications:

  • 07-16 Jeep Wrangler JK
Application by vehicle year

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Manufacture Warranty Information

  • All warranty claims must be directed to JKS Manufacturing, Inc. directly, as dealers and distributors of JKS products are not authorized to make judgments on any warranty issues. JKS Manufacturing, Inc. stands behind its engineering and workmanship 100%, and warrantees all JKS products to be free from defects in workmanship and materials prior to installation. JKS Manufacturing, Inc. accepts no responsibility for any altered product, improper installation, or improper use of our products. JKS products are intended for off-road use only. Because of the heavy duty environment in which JKS products are used, it is not possible to warranty or guarantee the performance of any item, nor can we accept responsibility for breakage or failure. JKS Manufacturing, Inc. disclaims any expressed or implied warranties, and we disclaim any liability for actions resulting from failure or parts durability. JKS products and those manufactured by others may be subject to an infinite variety of conditions due to the manner in which they are used, serviced and/or installed. Purchasers and users of such products rely upon their own judgment as to the suitable use, selection, service, and installation.

Product fits the following applications

  • 2007 Jeep Wrangler JK
  • 2008 Jeep Wrangler JK
  • 2009 Jeep Wrangler JK
  • 2010 Jeep Wrangler JK
  • 2011 Jeep Wrangler JK
  • 2012 Jeep Wrangler JK
  • 2013 Jeep Wrangler JK
  • 2014 Jeep Wrangler JK
  • 2015 Jeep Wrangler JK
  • 2016 Jeep Wrangler JK
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