I wanted to know if anyone else has smelled the faint smell of sulfur from the cat. I hav a 2004 FX4 and about 530 miles on it. If I run her for about an hour , when I shut her down I get a faint smell of sulfur comming from the front grill.

 

Ditto, but with additional mileage and the seasonal switch away from 'winter' fuel formulations, the odor will go away.

 

Yep, mines got it to. I found that it has the stink here where I live along with down south in Georgia when I go there. The last reflash that I got from the dealer helped but it is still there....the hotter the vehicle gets, the worse it gets.