I have 2 Holley Blue fuel pumps and they are grossly insufficient, even with my truck on fuel saver mode it drops to 0 fuel pressure WOT. I was thinking about getting a FASS system. Would this give me all the pressure I need? or do I need to replace the fuel lines with bigger ones, add a draw straw etc...? Thanks in advance, A.Wall

 

A FASS or Airdog system is all you need.

 

Which one is recommended? I have heard a lot about the FASS and that it is a great system, havent heard much about Airdog. Would leaving one of the Holleys help anything?, hurt?

 

If you get a FASS or Airdog you would remove both pumps you currently have. I say FASS or Airdog because I believe they are both a very similar design. Don't quote me but I believe one company is owned by the father(original design) and one is owned by the son. I think the two gentleman were once in business together but got a divorce and now you have two companies. I think that is a very short version of the story but don't quote me. Either way you go they are a good piece of equipment.

 

if go with the fass titanum 150 or larger youll need the suction tube

 

If you want to do it right go bottom feed, its easy and flawless.

 

A good way to get a slug of water too if you have poor fuel.

 

Whats a suction tube? Same as a draw straw?

 

Oh you mean that with a draw straw the water is taken out? I have run millions of miles with a bottom feed and have one dodge with bottom feed, bottom feed protects you from water building in the tank and causing a major water problem. You have filters for this purpose, especially on a FASS.

 

Youll be fine with the FASS 150 you mentioned Awall, No need to go any bigger unless your turning it into a comp truck.
The FASS 150 or Airdog 165 would be plenty for all your needs IMO.
I see 20 psi at idle and 13 psi FP at WOT with my FASS.

 

I have the older bigger fass and run 15 wot and 18 idle.

 

Never said a draw straw takes out the water. But a draw straw isn't at the lowest part of the tank where water likes to settle. The bottom feed is. That was what my point was.