fass or airdog fuel heater or not?

[93cummins89]

im going to install a fass or airdog soon and was wondering wich is better? also i live in ohio where it gets very cold in the winter. the fass offers an optional fuel heater you can put in the fass. the airdog dont(that i know of). with the adding of one or the other this will delete my fuel heater the mechanical pump and the stock water separator. also can you replace the fass or airdog with fleetguards?

[oldestof11]

Personally, I have read of less failures with the FASS. Airdog's new line isn't doing so well.

I would personally buy a Hungry Diesel piston pump. Reason being it is still mechanical, less things to worry about (like fuel getting into the motor windings that happens often with both pumps you listed), easier install, cheaper than the other 2. Eric is also a 1st Gen fanatic and is always trying to help other 1st Genners.

[93cummins89]

i ordered a fass with the fuel heater you can replace the fass filters with almost any other filter. Plus im deleting alot of stuff off of my cummins so it will be simple to wire in.

[PToombs]

Did FASS make a comeback? I know a year or 2 ago the AirDog was the hot ticket because Fass was eating motors and most of them weren't being covered under warranty.

[oldestof11]

Airdog was doing that. Seems to have slowed down in the last 6 months. I didn't know FASS was doing something like that unless it was 4-6 years ago?

[RCCUMMINS89]

Air Dog had a huge warranty issue percentage about 2 years ago.... they have come completely out of it now. We've never carried FASS, so I have no opinion on their stuff.

[fatty]

I've been running an Airdog 150 for over five years now and it's never skipped a beat. Holds 22 or so psi.

[ellis93]

I've heard the stories.....never seen any problems out of the ones I've put on.

[RCCUMMINS89]

It was a short run, that they were having issue. Due to the vp trucks losing an injection pump almost immediately, when the lift pump goes out.... their warranty issue was very wildly publicized.

We had about 25% failure rate with the Air Dog pumps we sold for about a year......over 50% for about 4 months failed.

[93cummins89]

i guess there is good and bad in everything these days. if airdog would have offered the fuel heat options that the fass has, i would have gotten air dog. both offer filter swap options (im big on fleetguard) if any one has advice on installing im sure ill need the tips.

[burnt_servo]

I've been running just a fas pump with a automotive prefilter feeding into the stock fuel filter since I put my 2002 on the road ( feb 2010 )

the only issue I had was running 12 year old summer diesel in nov , being away for a week and coming back to a cold snap and the fuel gelling up hard . no opportunity to burn that fuel up and refill with #1 .

so far the coldest I've started my truck without plugging it in was -45 c .... if I didn't use 0w40 oil , it would have never started . but I had zero issues with the fuel gelling using what ever the factory used for a fuel heater .

[93cummins89]

thats good advice keep fuel fresh and use anti gel additives. And Burnt, i don't know how similar the 02 is to the 91 but i'm deleting the factory fuel lift pump and the factory filter/ws and the factory fuel heat thats where the fass comes into play all the tank transfer pumping filtering ws and fuel heat will done by the fass