Air Dog vs. FASS vs. GDP - Dodge Cummins Diesel Forum
4th Gen Powertrain Discussion of components that are directly involved in the power production and all that is needed to get and keep the truck moving . Engine, Transmission, etc...NO ADVERTISING

 
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post #1 of 12 (permalink) Old 11-11-2015, 01:33 AM Thread Starter
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Air Dog vs. FASS vs. GDP

How does the AD165 compare to the FASS 150 to the big line kit? I know I need better filtration. The addition of more fuel allows more upgrades in the future. Just wanting to know how and where to go next. FWIW I do use the better 3 micron nano net fuel filters now. I have read lots of problems from both AD and FASS customers. What is the cause of these issues?


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post #2 of 12 (permalink) Old 11-11-2015, 05:48 AM
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Quote:
Originally Posted by strizno View Post
How does the AD165 compare to the FASS 150 to the big line kit? I know I need better filtration. The addition of more fuel allows more upgrades in the future. Just wanting to know how and where to go next. FWIW I do use the better 3 micron nano net fuel filters now. I have read lots of problems from both AD and FASS customers. What is the cause of these issues?

All depends on how much power you want to make in your future mods.
The GDP MKII and big line kit are nice additions or any extra fuel/water separator filtration kits for that matter just as a safety net. The Airdog and Fass are more tailored to the folks planning bigger power mods who need increased fuel delivery. You would have to let the members know what kind of power increase you are looking at for us to accurately steer you in the right direction.
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post #3 of 12 (permalink) Old 11-11-2015, 11:50 AM
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I would recommend a FASS system over adding filters to the factory lift pump system. Even with small tunes on these trucks you can still loose fuel pressure under load with the stock lift pump. Then with adding a filter in line, it could affect lift pump volume. With the high pressure common rail systems, air and water are just as detrimental as contaminates and the FASS system is one of the best for removing those. I recommend FASS systems on stock trucks and performance applications. A 95GPH pump is all that is needed for most stock trucks. Ensuring that your CP3 pump ALWAYS has the proper amount of good clean fuel just makes the fuel system happy!


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post #4 of 12 (permalink) Old 11-11-2015, 12:03 PM Thread Starter
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I don't intend to go too big as I want to keep it on the street. That said, there is room for improvement in filtration. I'd like to see mid 5s or even 600 but still tow a toy hauler with reliability.


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post #5 of 12 (permalink) Old 11-11-2015, 10:23 PM
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Originally Posted by DieselPowerProducts View Post
I would recommend a FASS system over adding filters to the factory lift pump system. Even with small tunes on these trucks you can still loose fuel pressure under load with the stock lift pump. Then with adding a filter in line, it could affect lift pump volume. With the high pressure common rail systems, air and water are just as detrimental as contaminates and the FASS system is one of the best for removing those. I recommend FASS systems on stock trucks and performance applications. A 95GPH pump is all that is needed for most stock trucks. Ensuring that your CP3 pump ALWAYS has the proper amount of good clean fuel just makes the fuel system happy!
Just wondering why you choose FASS over AirDog?

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post #6 of 12 (permalink) Old 11-11-2015, 11:16 PM
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Fass has my vote. I just heard slightly better things from fass than AD. Not to mention fass has a bunch of demo vids directly comparing themselves to a "165" competitor (wonder who that can be) and fass always comes out on top. I could have just been suckered into their marketing campaign but it sure worked! No complaints yet either.

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post #7 of 12 (permalink) Old 11-15-2015, 09:16 AM
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I have a fass on my 06 with a fuel sump. No problems at all in over 26k miles. I will be doing the same to the 11

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post #8 of 12 (permalink) Old 11-15-2015, 09:49 AM
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Quote:
Originally Posted by Gabriel shaw View Post
Just wondering why you choose FASS over AirDog?
You should search the forums. Airdog hasn't had a good reputation for the last few years. My FASS has been rock solid, however...

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post #9 of 12 (permalink) Old 12-26-2015, 11:35 PM
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My AD has 65000 miles on it. My original AD only lasted 12000 but they sent a relacement no questions asked. Hope this helps . AD100

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post #10 of 12 (permalink) Old 12-26-2015, 11:39 PM
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Had too many problems with air dog very loud and pump gear would break I changed it 3 times got so fed up I got Fass never had issue after.

I only Fass wins better quality.

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post #11 of 12 (permalink) Old 12-27-2015, 12:13 AM
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Had the Airdog 4G on my Duramax super quite and no problems with it.

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post #12 of 12 (permalink) Old 12-27-2015, 12:49 AM
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I haven't known anybody personally that has had issues with Fass, but I do personally know a few people that have had issues with Airdog.

One of my friends had an Airdog 165 on his Duramax that started blowing fuses because the motor was drawing way too many amps. Airdog customer service told him to direct wire the pump to the battery without a fuse. Seems legit.

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