What is the max power you can get from stock in tank lift pump? Will a smarty pull it down to zero?

 

I am running about 450 rwhp and hold ~4-5 psi thru 3 filters. I would guess ~500rwhp is as much as you can get out if and maintain positive pressure. Bosch says you can go as low as -5 psi, but it's to hard to measure and 1-2psi is better anyhow.

That's the equivalent of SW5 on a non-UDC Smarty or SW3 on a SJR.

 

Thanks