How much performance gain do you really get with a Air Dog or FASS.... - Ford Powerstroke Diesel Forum
6.0L Performance Parts Discussion What has or has not worked for you?

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Old 03-24-2011, 07:50 AM
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How much performance gain do you really get with a Air Dog or FASS....

i am trying to see if its worth getting... I just have the mods listed below but want more milage i only get 21 on the highway... but wanna try for more... i just wanted to know if it really helped out the spray pattern for the injector and all that jazz and just get you guys input...
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Old 03-24-2011, 08:44 AM
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Won't help that any. It's just to keep your injectors happy.
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Old 03-24-2011, 08:50 AM
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i got 26 highway on mine but i had the banks economind 6 posistion chip on it . wat the did was it limited how much fuel was being deliievered when i was steady drivin the same speed at the same rpm
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Old 03-28-2011, 03:29 PM
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I didn't see any gains or losses. I do have the piece of mind now that if I want to go with bigger injectors and a larger turbo my fuel delivery system will handle it. Oh, i got a cool AirDog sticker for my tool box also!
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Old 11-11-2011, 06:18 AM
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I did it for the piece of mind of extra filtration
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Old 11-11-2011, 06:46 AM
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I didn't see any mpg gain with my AD2 but it does start easier with it. Main reason I put it on was like previously stated, injector piece of mind. I have an '05 which is worked hard all the time and unlike guys I know that run an OEM fuel system I have only had to replace one injector in the life of my truck and that was due to me running super low on fuel.
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Old 11-11-2011, 07:57 AM
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ONLY GET 21!!!!!!! dude you should be super happy with that! nothing wrong there i wish i could touch that number ill be happy if i can get to 18mpg's. but to answer the question the only thing i saw improvement in was a little throttle responce
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Old 11-11-2011, 09:08 AM
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Same here. Throttle response improved. Slightly quieter, but not much. I can say whether I got better mpg because I bought it shortly after getting my tuner (fuel pressure was dropping drastically). Between tunes and airdog I gained about 1.5-2.0 mpg... which puts me at 16ish mpg down the hwy. Thanks for rubbing in your horrible mileage!!! lol. jk.
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Old 11-11-2011, 10:03 AM
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People claiming they get 21 or 26 are just using their dummy gauge in the cab. I bet if it is hand calculated it would be more on the 16-18 side. It just does not happen getting that type of MPG with our rigs.
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Old 11-11-2011, 10:08 AM
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My Excursion doing 110 kph on cruise control flat ground and no trailer gives me 20 - 21 mpg (imperial gallon) figured out by hand. If I take over it drops to 16 - 18. My engine isn't stock but it is close to it.
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