New gen FASS pumps: 100 vs 165

[N2BRK]

I use the new fass draw straw and return fitting. The straw seems huge in diameter and I installed it with a gap to the floor of the tank, per the directions. No issue at 1/4 or 1/8 tank with a fass 200 at a steady 14psig.

 

[NMWildcat]

I run a 95gph and my son runs a 165gph FASS lift pump. Both Duramax are stock injectors and injector pump. His truck (LML) is tuned, mine (LBZ) is not. Both lift pumps work fantastic.
When I put mine on, the 165gph wasn't out. We went with 165gph on his as it was the same price and the extra flow won't hurt anything.
Both trucks gained instant pedal response but most importantly, we got rid of the poorly designed factory fuel filter body that was having to be rebuilt/replaced annually. No more fuel supply problems since deleting the fuel filter body.


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