Airdog?
 

Is it worth it buying the more expensive FASS when the Airdog setup is on sale for $500? Other than the shorter warranty, the Airdog is more compact and quieter, with 1/2 lines, if that matters...

Get the airdog. It's basically the same product for $150 cheaper. That's just my .02
Driving a cummins and worrying about fp noise seems a little ironic through. lol

Im gonna order one, good point about lp noise, cant hear it over the tire whine, turbo whisle, and exhaust!

try one of these

I think ill go with the Airdog, that system looks... Primitive.

Am I wrong or is that just filters, its not a ift pump right? I cant say anything for the airdog becouse I have a fass but I think they are both really good. I don't think the noise is a factor the only thing Ive ever heard is when you first turn the key on you can hear a quick whirr or whatever noise it makes for a second, once the truck is running you cant even hear it if you lean under the truck and put you ear right up to it, after all these trucks are loud. I wouldn't be afraid to try an airdog for the better price but I dont think you could go wrong with either.

The older ones were pretty loud. With the window down and the engine running, I could still hear it. My new one is about half the volume of the old one.