Has anybody used this in there dmax's. The dyno numbers look pretty good on there website pertaining to mpg it's just kinda pricey.

snake oil in my opinion. Although I would love to be proved wrong on this. Do a little research online I doubt you'll find any users(that aren't dealers themselves) that have anything good to say about it.

The Oct/Nov issue of "SnowTech" magazine had an article on this product. Seems they've been impressed with fuel quality after using the FFC, claiming issues with stale fuel seem to be a thing of the past. They don't like the catalyst bouncing around in the fuel tank on a snowmobile however. I doubt that they've tried it in diesel fuel.........but according to the article, the U.S. navy is purchasing $3,000,000 worth of permanent fuel catalysts from Advanced Power Systems International (APSI), makers of the FFC, for installation on 4,000 patrol boats, escort boats, security boats, tugs, and workboats.
I've had some interest in the FFC, but ............a little skeptical I guess. I'm not sure it's needed on a vehicle that gets fresh fuel on a regular basis, but for a boat, ATV, snowmobile, or that snowblower....................

http://www.fitchfuelcatalyst.com

I do use it in my sled as a stabalizer and it works good for that but i was just wondering about my dmax. thanks dave