Don't spend your money
Reviewed By Thomas B (Central Point, OR) Reviewed for a 1999 Dodge Durango —3/19/2013 4:42 PM
I have a 99 Durango with a 5.9 liter engine so performance was never an issue, I was looking for the economy factor. There was no discernable difference in performance. I filled the tank @ 11.6 mpg prior to the installation, my next fillup was 12.1 mpg a statistical anomaly likely due to my observing my driving patterns. At that rate it will likely take longer than my vehicle will last to pay for the module.
Reviewed By James R (Brownsville, TX) Reviewed for a 2004 Dodge Durango —4/5/2012 8:41 PM
I bought this PCM mainly for the mileage gains and it has helped somewhat. I don't have an exact figure for it but I have been able to squeeze more from my tank. This product really shines in the performance aspect. When driving normally, shift-shock is almost non-existent, and at full throttle, shifts are firmer and a power gain is very noticeable. The ride as a whole is much smoother, and has noticeably more torque across the RPM range. I highly recommend this product.
Not bad for the money
Reviewed By Johnathon W (Rawlings, MD) Reviewed for a 2005 Dodge Durango —7/21/2009 12:36 PM
It hasn't been installed long enough to tell the mpg yet. I installed it with an afe intake. I figure I should see a difference in the gas mileage and I can feel a little power difference. I didn't have to push on the gas pedal as much to do normal driving. Overall I'm satisfied with the product.