FASS - worth it or not?

[oi8228oi]

ive been slowly fixing up my 99.5 supercab dually but driving it around is starting to hurt my pocket at $75 from 3/4 tank , so i put the bully dog power pup on and keep it on the lowest setting i have a RFI intake and a 4 inch hog exhaust. ive read mostly good about the FASS systems out there but is it really worth the 600 or more. anyone have it, tryed it, know about it. thanks.

 

[powerboatr]

wow 600 already
you want my Op, keep your 600, it will take alot of miles to pay for it

read roosters wiki on regulated fuel return it is tried and true and lot less than a fass system,
and get rid of air just as well at about 1/2 the cost
but again you arent going to see a payback right away , 150 or so gallons if you gain 1mpg, that doesnt sound like much,
but the engine will run smoother
i guess its all up to your wallet,
I amy not be teh best one to ask either, I took my cat to teh vet and i gained almost 2mpg on my daily commute,
so i paid for my test pipe in 3 fill ups?