Max lift pump pressure?

[red1977]

Can any thing bad happen if you bypass the ficm?

 

[malibu795]

i run stock 6.5 lift pump..:rofl:

 

[05chevy]

Can any thing bad happen if you bypass the ficm?

I run my ficm dry. Just try to relocate it away from the motor to keep the temp down

 

[CurtisEmery]

I run 1 automotive 2000 at 18 psi idles a little lumpy but it's a puller so who cares.

 

[Operator1]

18 for me. I have ran 25 for a little while though.

 

[TRUBBS]

how could one run higher pressures on ficm trucks. any mods i could do?

wondering also, gona add a lift pump to mine one day when funds allow it, just wondering what it can run at without changing ficm and all that, without causing problems.
dont really expect to gain anything from the higher pressure but if i can get away with a "free flowing" pump rather then buying a reg to keep the psi down id rather do that

 

[Benltr]

I didnt see any gain in performance/rail pressure/ ET with mine running 11 psi or 28 psi...

Rob told me he even tried to push a lift pump to 200 psi without any gain...

I tought it would help but it doesn't (on my truck).