I was able to buy a used DPF, and plan on using it for a stealth delete with a smarty jr on my 07.5 6.7L. Is there anyone in the Denver area or possibly another state that is required to have a "breathalyzer" emissions inspection done tell me if I can pass the test with a hollowed out DPF?

 

I dont live there but I would say no for the simple reason of what the DPF is actually used for..

 

as long as your truck doesn't smoke more then the limit you will be fine

 

You will pass as long as the smoke is less than 20% opacity.
Go to Diesels Only on Alameda, they're the cheapest and they don't care what you've done to the truck.

 

i almost think with the smarty and on the tune that will put your truck below factory power you could pass it says on the instructions (where no smoke is desired) i would like to see somone try just too see if it worked and take the worry out on the other guys

 

20% opacity is a LOT of smoke, your truck would have to be very poorly tuned to fail an emissions test in Colorado.