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DONT GET A FASS! they dont even take the air out of ur lines AD does! and there cheaper
 

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i heard the same thing about fass not removing the air. i heard that it does remove the air at idle or under a little throttle but when under WOT it allowed air to travel passed. so my recommendation would be the AD for sure.
 

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i heard the same thing about fass not removing the air. i heard that it does remove the air at idle or under a little throttle but when under WOT it allowed air to travel passed. so my recommendation would be the AD for sure.
Hmm..why though AD and Fass are pretty much the same design.



It is an electric pump system why would the throttle have anything to do with it?
 

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Hmm..why though AD and Fass are pretty much the same design.



It is an electric pump system why would the throttle have anything to do with it?
Thats correct. Duramax, Cummins, and Powerstrokes are pretty much the same also. They are differences in the systems. Some very important ones that are left out of the FASS. Take the filter off of an AirDog and Fass and look. You will see many differences. :thumbsup:
 

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ok a few questions here. I am only looking for 500-550hp when I am done upgrading my '05 (yes I realize that no project is ever truely finished), which fass or ad would I get, a 95/95 or 150/150?
 
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