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5.9L 12V Performance Discussion of 12 Valve 5.9 Liter Dodge Cummins Diesels with P7100 Injection Pumps Related to Performance and Longevity

Its time to replace the old stock lift pump with something that will flow more and let me make more horsepower. I know theres the airdog fass and some others from bd and who ever else. i just want some advice on which one to ... JOIN NOW TO REMOVE TRACER

Umm more fuel.

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Old 07-26-2009, 11:04 PM
navalseabee's Avatar
Diesel Enthusiast

Default Umm more fuel.

Its time to replace the old stock lift pump with something that will flow more and let me make more horsepower. I know theres the airdog fass and some others from bd and who ever else. i just want some advice on which one to choose. its a 94 12valve. my goal is 600 hp when im done.

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Old 07-26-2009, 11:07 PM
94cummins12v's Avatar
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would rather be hill climbin



you shouldnt have any problem making 600hp with a stock lift pump

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Old 07-26-2009, 11:14 PM
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Dont need it - use the money somewhere else (pump work)

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Old 07-27-2009, 06:08 PM
94 12valve's Avatar
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" it only makes 500 hp hes not gonna do well"

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I say buy either the air dogg or the fass 150 pumps ( air dogg just came out with a sweet new pump set up check it out). I have the air dogg 150 in mine and like it holds the fuel press very well. and about the stocker being enough for 600 hp Im not sold on that.

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Old 08-15-2009, 07:30 PM
navalseabee's Avatar
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yea i dont know about that id be a lil nervous. but yea i saw the new airdog unit it looks real nice i read all about it i like it alot.
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Old 08-15-2009, 09:00 PM
allisfarmer's Avatar



i have an airdog on one truck and a fass on the other would defintly recommend the airdog

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Old 08-15-2009, 09:44 PM


Stocker might be good to 500 I would look at upgrading some other things first tho. What all have you done? I like my AD150 its not as loud as the FASS 2 that I had on my 98.5
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Old 08-16-2009, 12:04 AM
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IF your factory fuel system is fresh and has no air seeping into it then it will support 600 easily.

The new AirDog DF-165 is a sweet system and would make a fine choice for an upgrade.I do agree with the good Doc though,if your factory system is good then spend your money on other parts.

As for FASS....
While I am running one I would NEVER reccomend one to ANYONE!.From dealers who have no interest in helping you fix yours,to their poor customer service,your better off spending your money elsewhere.Mine has been on now for two years and the low pressure has NEVER been fixed and it looks like it will not ever be fixed.So much for a 7 year warranty which they claimed it had....

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