fass or airdog? - Diesel Truck Forum - TheDieselGarage.com
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post #1 of 13 (permalink) Old 02-22-2007, 12:39 AM Thread Starter
 
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fass or airdog?

what are the benefits of each? Which is better? What do most do with the stock fuel filter?


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post #2 of 13 (permalink) Old 02-22-2007, 02:17 AM
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I think you can build a complete system for less; regulated return and all. I'll have pics soon of my home brew fuel system. Just wrapping things up with the final parts I got today. I took out the fuel bowl and all quick connect fittings from tank to engine this past weekend. I did use kinda expensive Aeroquip fittings, but they sure do look cool. I ended up using Aeroquip 6AN socketless hose since it was cheaper than going to Napa for fuel injection hose by about $3per foot.

Tim -pics coming soon

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post #3 of 13 (permalink) Old 02-22-2007, 02:21 AM
 
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Can't wait to see the pics!!
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post #4 of 13 (permalink) Old 02-22-2007, 03:41 AM
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IMO FASS is a little better. They have revised and upgraded the pump, plus I believe that the FASS has a little better filtration. Airdog, came about after the father/son company of FASS split, and the Father started Airdog to compete with FASS. I will be in the market for a new fuel system in the next couple of months. For me it will be between FASS and GDP for my Cummins…..

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post #5 of 13 (permalink) Old 02-22-2007, 04:54 AM
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Quote:
Originally Posted by ndrorydr
I think you can build a complete system for less; regulated return and all. I'll have pics soon of my home brew fuel system. Just wrapping things up with the final parts I got today. I took out the fuel bowl and all quick connect fittings from tank to engine this past weekend. I did use kinda expensive Aeroquip fittings, but they sure do look cool. I ended up using Aeroquip 6AN socketless hose since it was cheaper than going to Napa for fuel injection hose by about $3per foot.

Tim -pics coming soon
The Fass and Air Dog systems will replace fuel pump and filters only. They do not have a "regulated return" from the engine. IIRC both require a 5/8" feed from the tank and a 1/2" return to the tank. Then it has a 1/2" or 3/8" pressure line that goes to the engine.

I read through the instructions for the FASS once and I don't remember it saying anything about eliminating the stock filter. Probably would be best to call tech support about that.

As for which is the best - I have no clue. They appear pretty similar though.

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post #6 of 13 (permalink) Old 02-22-2007, 05:25 AM
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The FASS and airdog are designed by a Father and son, the Airdog is designed by the dad and FASS by the son, and there is some serious bad blood between them, the FASS has a reputation for poor machineing but that is only hearsay from guys with experience with them but the air dog has no bad press that i can find and all the guys i know that have it wont use nothing else. both ar designed to augment the factory pump, factory lift pump, filter and remaining components stay in place.

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post #7 of 13 (permalink) Old 02-22-2007, 05:32 AM
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Quote:
Originally Posted by snowaholic
Airdog, came about after the father/son company of FASS split, and the Father started Airdog to compete with FASS.
I'm not sure that's entirely accurate. The AirDog was developed specifically for the light duty diesel trucks. If Pureflow (then Ekstam Worldwide) simply wanted to compete with FASS, they would have just marketed the original FP-135 to the light duty market and made an install kit for it. Instead of doing that (the FP-135 is huge), they designed a physically smaller unit for our trucks and the AirDog was born.

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post #8 of 13 (permalink) Old 02-22-2007, 05:35 AM
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Quote:
Originally Posted by racehauler
The Fass and Air Dog systems will replace fuel pump and filters only. They do not have a "regulated return" from the engine. IIRC both require a 5/8" feed from the tank and a 1/2" return to the tank. Then it has a 1/2" or 3/8" pressure line that goes to the engine.
Just to clarify, the AirDog will NOT replace the stock pump. The AirDog is a HIGH VOLUME / LOW PRESSURE pump only. Current max output is 15psi (Dodge and maybe DMax configuration...standard Ford configuration is 10psi output).

Also, the AirDog is quite content working with the stock 3/8" pickup in the tank unless you need to use it to feed a larger aftermarket pump.

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post #9 of 13 (permalink) Old 02-24-2007, 12:16 AM Thread Starter
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Quote:
Originally Posted by ITPDiesel
Just to clarify, the AirDog will NOT replace the stock pump. The AirDog is a HIGH VOLUME / LOW PRESSURE pump only. Current max output is 15psi (Dodge and maybe DMax configuration...standard Ford configuration is 10psi output).

Also, the AirDog is quite content working with the stock 3/8" pickup in the tank unless you need to use it to feed a larger aftermarket pump.

So it will add 10psi to the stock pump?
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post #10 of 13 (permalink) Old 02-24-2007, 01:08 AM
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I believe Dennis is saying it will only put out 10 psi but will provide a good volume of fuel. Gene, :mafia

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