2005-2006 Jeep Wrangler TJ PCM Tune

Original price was: $349.99.Current price is: $275.00.

Currently only available for existing and new Wrangler Fix 2005-2006 Jeep Wrangler TJ PCMs. (Other years and models coming soon!)

WranglerFix custom tuned PCMs are engineered for efficiency and power and are tailored to enhance throttle response, increase horsepower, torque across the entire powerband while improving fuel efficiency. With precise adjustments to ignition timing, fuel delivery, and additional parameters, WranglerFix unlocks the full potential of your vehicle, delivering a driving experience that is both exhilarating and efficient. Whether you’re navigating rugged terrain or cruising down the highway, WranglerFix ensures your Jeep Wrangler performs at its peak potential.

IMPORTANT: If purchasing a new 2005-2006 Jeep Wrangler PCM you will have the option to add this PCM tune at the time of purchase with your new PCM. If you have an existing Wrangler Fix 2005-2006 PCM, you will have to send us your PCM. Turnaround time is roughly 24 hours. The sooner you send us your PCM, the sooner you’ll get it back.



Below you’ll find a review from one of the first TJ owners to test out our new Wrangler Fix PCM tune for 2005-2006 Jeep Wrangler TJs (click here to see the original forum thread):

“I now have the new WranglerFix performance tune. Here are my initial observations:


The process:


Those who already have a WranglerFix ECU send their existing unit back to WranglerFix. They will need your VIN.


The cost for the upgrade is $275. Customers receive an electronic invoice when WranglerFix receives the unit.


Turnaround time was 5 days from California to Florida and back.

What the performance tune does:


This is not a “race tune.” Shift points and other parameters have been altered to increase performance and efficiency, but this will not turn your I-6 into a V-8. The best way to describe what the tune does is make the 42RLE automatic transmission with 0.69:1 4th gear/overdrive play nicely with the 4.0 engine. It does that job well.


I have not driven with it enough to record rpms at the shift points, etc., but that will come. My goal so far has been first impressions and observations regarding drivability. In that regard, I can say that my LJ now shifts the way it should have from the factory and I can make more rpm with less throttle.


After reinstalling my WranglerFix ECU with performance tune, the number of times I have reached for the OD “off” button is zero. Before, I couldn’t go anywhere without being reminded by sluggish performance of the need to keep OD from engaging. That alone makes the price of the upgrade worthwhile.


Stay tuned.