Fass/AirDog
 

I was wondering whats the difference between the two of these?
they both look about the same
thanks
fuzzy

Price and warranty, and Name is the only thing i can think of thats different between them.

Most people use FASS because its FASS.

Ive heard that Air dog remade their pumps to be more compact and run quieter than before. But thats all i know as difference.

Big Difference Fuzzy,

The fass, which came on the market in 2003 uses the pump design and air separation of the 1996 Fuel Preporator, minus the primary or positive air separation feature. Ref. statements by Brad Ekstam on Feb. 16, 2007 when asked "the fuel Preporator without the air bleed port would operate in the same way as the FASS.." Brad replied "I am saying that you would be taking air out the same way we do".

Because the fass does not have the primary gas exit port, as does the Fuel Preporator AirDog, when the fass regulator closes to maintain pressure to the engine, nothing can return to the tank, everything must go to the engine, including air. The Fuel Preporator AirDog, because the primary gas exit port enters the return to tank port after the regulator, will always separate the air from fuel as long as there is the slightest positive pressure to the engine.

The AirDog, the smallest Fuel Preporator, with the positive or primary gas exit port and the 'Flow Dividers' added in 2002, can separate air from fuel at 150 gph.

The Fuel Preporator FP-200C, for class 8 trucks, die cast with an injected molded cover can separate air from fuel at 250 GPH and the FP-650 separates air from fuel at 650 GPH for the 14,200 cu. in. 7,000 hp locomotive and barge boat EMD engines.

The Fuel Preporator is approved for sale and use in California by CARB and has been tested and verified by CARB and EPA certified Olsen Ecological Labs of Fullerton, CA. under ISO 8178 8 Mode Test Criterion. Fuel Preporator performance for air separation horse power and torque inprovements and emission reductions has been tested and verified by independent testing at University of Illinois College of Engineering, University of Missouri School of Engineering Rolla Campus, University of W. VA. Engines Labs, NREC Power Systems Houma, LA. and Ministry of Transportation, Vehicle Inspectation, Toyko, Japan.

The Fuel Preporator Fuel Air Separation System has been on the market since March 15, 1993.

Small and compact,
The AirDog 100 and 150 are only 7.0" L X 3.2" W X 10.0" T.
The fass 150 is much larger, 8.6" L X 4.5" W X 14.1" T.

I hope this answers some of your questions.

Charlie

:humm:

Thanks Charlie. :up:
The size is the first and most obvious thing. The AirDog is far smaller than the FASS. Next is the superior engineering design that is far more efficient at removing air and providing the advertised volume of fuel. Last but not least is the better performance. Take a look at the specs between the two systems. :up:

Thank you very good info there. one more question, with the airdog 150 does it remove the stock pump or help it?
thanks again

it will totally replace the OEM pump......you dont want it in there

good i want to get rid if the stock pump. also where do you get replacement filters?

Airdog

ok thanks. the airdog 150 with supply enought fuel for a set of 190cc injectors? i already have a stage1 fuel system on my truck.

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i just read on another site, that the airdog with help the stock pump on a 6.0.