Performance tuning is more difficult vehicles were the factory computer does not have a chip that can be easily replaced. To solve the problem JET developed a plug in module that attaches to the vehicle computer externally that can add up to 30 horsepower. The JET Module optimizes the ignition spark advance, air to fuel ratios and transmission shifting for the ultimate in power and mileage gains.
It woke up this 5.7 HEMI. Throttle response improved along with shifting.
It was easy to install and I have noticed a slight power upgrade. One thing I would note about this unit, is in the instructions it tells you to completely remove the ECM from the unit before installation, however I had a difficult time removing the ECM because of corroded fasteners. So, on my 2006 Jeep TJ SE, I was easily able to install this without removing the ECM from the engine compartment.
I'm not sure this did anything for my 09 Jeep Grand Cherokee. I have to run it a couple hundred miles and do a fuel mileage check. If it made a performance increase its so little you need a dyno to get the results
I installed the JET Stage 1 Module in my 1995 Jeep Grand Cherokee ZJ 5.2 and I couldn't be happier. Originally, complications forced me to send the chip directly back to JET's warehouse, however I received the chip back in only 4 days (from the day I shipped it, and did I mention they remedied the problem free of charge, excellent customer support)! Once installed, my Jeep drove like nothing I've ever felt, it was responsive and FAST, with great power on all sides of the power spectrum, as advertised. I can safely say that as a company, JET certainly have earned my trust as a customer. Derek
I installed this on a 2001 Jeep Grand Cherokee. 1) The ECM is kind of difficult to remove, you have to move/disconnect 3 harnesses and the computer is mounted to a rack that is difficult to remove. 2) you really have to press the module into the ECM otherwise it will throw codes and the motor will not run correctly(if at all). 3) There is a noticeable difference in shifting, it is quicker to downshift when accelerating and it delays to upshift if you want to step on the gas again. The throttle response is quicker. 4) It will give you better gas mileage as long as you are not flooring it all day long. I was doing 14.3 mpg average before i installed this, then I installed this chip and a CAI and now i am getting 15.3mpg.
This is very easy to install. You can definitely tell improvements in the power and the shifting points. I removed it when I went to the dealer. I could feel the differences right away. The minute I left there, I pulled over and re-installed the chip!
Very easy to install for anyone! If your vehicle is still under factory warranty, you should remove it before taking to the dealer
Q: will the power control module-20314 remove the speed limit on my truck? Answer this question
A: Add up to 25 horsepower instantly with simple, plug-in installation! Only JET Performance Modules provide exclusive, full range Dynamic Spectrum Tuning of the air/fuel ratio, ignition advance, transmission and various other parameters. Each program is track and dyno tested to ensure the most possible horsepower and drivability from each application. 800.535.1161 Customer Support Hours: Mon – Fri 8:00a – 5:00p PST
Answered by Dave from 4WP HQ on 11/29/2022
Q: How to stop computer shut down at 95 on a 07 Chev z71 Answer this question
A: We need a little bit more information on what is happening. Please call our support line Toll Free: 1-877-474-4821
Answered by Kelly from 4WP Corporate Headquarters on 11/30/2020
Q: Does this part only fit unlimited's? Answer this question
A: Hello, the Jet Performance Products Stage 1 Jeep Performance Module part# JET90413 will fit the standard tj as well as the lj unlimited. Thank you for your inquiry.
Answered by mikey on 11/17/2014
Q: Is this totally automatic or are there pushbutton controls as in a pedal commander? Answer this question
Join our mailing list to receive information on new products, special events, discounts and more!
Sign up to receive deals by email!
Sign up to receive text alerts about new product releases, exclusive access to sales, and much more!
Sign up to receive deals by text!
By submitting, you agree to receive recurring autodialed marketing text msgs (e.g. cart reminders) to the mobile number used at opt-in from 4 Wheel Parts (4WP) on 21208. Consent is not a condition of purchase. Msg frequency may vary. Msg & data rates may apply. Reply HELP for help and STOP to cancel. See Terms and Conditions & Privacy Policy