I am from the East Coast of Canada, I have an 06 Liberty diesel let me start off by saying that my Jeep has a 3 inch strait exhaust, and I unpluged the air box sensor disabling the EGR. this done I saw no increases in MPG my Jeep get 24MPG town and 30 Highway ( Imperial MPG). I was still not pleased and thought there must be a way to get better MPG. After a year of reading on GED I decided to pull the plug and order the eco tune and programer. This cost me $980.00 Canadian dollars delivered to the door and took about a week. I did the flash as per instructions and was disappointed I saw after two tanks of fuel no increases. I made a phone call and was told very nicely to try and flash the jeep again. After the flash I ran a tank of fuel and WOW 30MPG !!!!!!Town no I can honestly say I did not notice any power gains but that is not why I purchased the tune. Yes my engine light that was on from my EGR is out also.
I am now getting 30MPG town and Getting 35-36MPG highway.
PS.. My only other advice for people who own a JEEP CRD is to install an inline lift pump makes starting easy.
Thank you Green Diesel
Wish you made one for my 07 Duramax
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