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WHOS NEXT
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Discussion Starter #1
I have a 99 dodge 24 valve with a p pump conversion. Which lift pump would be the best. I have a fass 150 now is that enough or do I need a bigger one and which would be the best.
 

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Senior Member
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437 Posts
what upgrades are you lookin to do im running everything i got on my stock lift pump right now
 

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Senior Member
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348 Posts
I have a FASS 150/150 I think it should be enough of a pump to do all my mods this summer. I plan on doing Level three injectors,bigger turbo,etc. I called Scheid and the man I talked too said the 150 pump is enough of a pump to run a VP44 or a P7100 pump. I think the main difference between the AirDog And the Fass is not very much! except that the Father dislikes the son a whole bunch. simular design simular purpose in life to remove air in fuel,pump fuel and filter fuel. Take your choice both are top notch products.Price would be my deciding factor and warranty . And dealer rep that you get it through. Good luck in your final decision. I think your 150 pump should do you fine. Why spend more than you have to? Is your 'P' pump starved for fuel? If not you should be just fine with what you have.
 

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WHOS NEXT
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Discussion Starter #4
My fass 150 that I have now only puts out around 15 psi. I was told that the p7100 likes to have more pressure like 20+. I know the new air dog you can adjust the pressure that you want and the pump will hold it. With what I have now I know you can change or modify the springs but I was told that will void the warranty and the pump won't hold up. As far as the fass 180 and 200 I was told that the 180 is stronger. I will be feeding the p pump which has 4g springs , a plate, and delivery valves and I'm running a set of 8×11 injectors with the pump.
 

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TDG Mafia
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651 Posts
From what I have read, it sounds like your FASS should be just fine. I'm not sure of the proper pressure to run the P7100 at, so you may want to put a post in the 12 Valve forum and see if one of those guys can tell you. I did however find this page that talks about the different FASS set ups and the recommended pressures for each...stock, mild modified, heavily modified, etc. Give that a look and see what you find out.
Hope that helps.
Here is the link.

http://www.dieselspecialists.net/fass.systems.htm
 

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2nd Gen Guru
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2,641 Posts
I have a 99 dodge 24 valve with a p pump conversion. Which lift pump would be the best. I have a fass 150 now is that enough or do I need a bigger one and which would be the best.
Airdog 100 is good to 500 HP then AirDog 150 is good well beyond the 500HP mark...

AirDog 150


I've got solid 15-16 PSI all the time...
 
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