Jet Performance Products Power Control Module; Stage 2 (1991 4.0L Jeep Wrangler YJ w/ Manual Transmission)Find parts that fit my vehicle

Jet tune

I couldn’t recommend this more to someone. If there is twenty five horses in something it’ll definitely be in torque. But aside from that I can tell a difference in the overall smoothness of the drive. I can tell the Jeep needed a tune after 32 years.

It works, Recommend

I noticed real gains in mpg. It was easy to install, and the display fits great on the dash to the left of the center instrument console.

Nice Upgrade

Very easy to install. Vehicle seems to have more pep and acceleration.

Jet Stage 1 Performance Control Module, 2016, 3.6L Rubicon

Slightly more torque and improved shift points. Some additional HP based on my seat of the pants dyno. The install was easy and straight forward, less than an hour for sure.

PC Module

Easy to install. Noticed the improvement i n torque right away and much better shifting. Also drive by wire throttle response lag almost gone. Excellent product by Jet.

Useful but tricky install

You will immediately notice the miles per gallon increase if your truck has that nifty novelty. The best part is your truck's reaction to the throttle position. The acceleration is very noticeable. Now to the downside. The instructions are very limited, to say the least. Finding the wire color that you need to splice felt like a game of chance as the model year cutoff at 2009. I ended up cutting my wire too short and had to buy a new MAF wiring harness.

More power

I noticed a big improvement once I installed power control module. Install took some time due to having to remove the windows washer reservoir. And the bolt supplied wasn’t long enough.