Are there any modules that work on the 6.7 ? I'm looking for just a little more power and better fuel economy.

 

Yes there are a couple out there to choose from, the Edge Juice with Attitude monitor, TS MP8, and if you want a programmer there is the Bully Dog Power Pup, and coming soon Smarty.

A bud beta tested a Edge J w/att and didnt see much better mileage, I think your only hope is the Smarty. You just cant make decent power or mileage with all the emissions equipment. That same bud sold his 6.7 and got a 5.9 a couple weeks later...