Quote Originally Posted by rob from bc canada
This "economy tune" sounds real good.

I think mine would have done about 17 -17.5 driving as you have described.

If true, at $3.00 per Gallon, you saved about $30 on this trip, and if you keep the truck for 200k you might save about $4000.

From what I saw on Kennedy's site, you need a spare ECM to load his tunes.

What was the procedure for you, and what did the whole thing cost???
Check with John Kennedy for current pricing.

There is an article currently on the site that shows how to change the ECM.

Here is link to the article:

http://www.thedieselpage.com/reviews/jkecm2.htm