How much pressure is too much for the inlet of the 5.9 cp3?

I currently have 70 psi, just wondering if that's too high. I've heard of guys running 45 psi with no problems.

94Matt's Sig:

2008 Dodge Cummins Quad cab, long bed, 4x4, manual. Herd bumper, 5" exhaust, egr/dpf delete, Black Maxx

2007 Chevy Duramax Crew cab, long bed, 4x4, auto. Ali-arc bumper, Edge hot juice/attitude

The Fodge, a 1993 Ford 4x4 reg cab, 03 Cummins common rail, with southbend FE and NV4500

Bunch of gassers

Damn Matt.......thats high dude

Whit's Sig:

* 01 Cummins/Dodge/HO/6 speed*275 injectors*PDR 35 turbo w/14cm housing & high pressure boots*HTT 3 piece ported exhaust manifold*Progaurd 7 with prefilter*Edge Comp*Fass II*Southbend con OFE*Jacobs brake*5"Stacks Big ens*E/F shift knob w/2low & brake switch*10 Gages*KW Ram air System cab controlled*Rickson 19.5x265's*True speed calibrator*Rancho 9000's*DT track bar*DSS steering stabilizer*KW Side impact rails*KW Traction Bars*Toolbox/fueltank 60 gal Combo*Mag High Tech Diff Cover*Ranchand bumpers*Grover air horns*Rear Wheel Cylinder Upgrade DYNO 375 Horse 941 Torque

“Life is not about waiting on the storms to pass…it’s about learning how to dance in the rain.”

Yeah, but is it bad high? I think I can drop to 40-45 fairly easy with different pumps. I would just go with a FASS or air dog but I have the dual tanks and I don't know how I would make it work with the selector valve.

equalizer line or tie the overflows together

they have overflows Matt........top of the tank on the tank module its the line pokin out with nuttin on it...................inside there is a ball that checks when the vehicle is upside down

Not this truck, it had a gasser with full emissions, I had to get vented gas caps after discovering as the engine ran the tank would go into a vacuum. The selector valve handles the supply and return lines getting to the right tank, I'm just not sure if I can suck through one instead of push through like the in tank pumps do. I know there are stock pumps for different engines that only put out 45 psi which I've heard of guys running air dogs at that pressure, so why go through the trouble ya know? Unless I hear a good argument that 70 psi is bad I'm going to leave it as is, at least I know I'm not starving for fuel

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Well, according to wicked diesel's website cp3 FAQ, they can handle up to 100 psi, need a minimum of 15 psi and notice an improvement in flow above 45 psi. Looks like they are saying the more, the better so I'm going to leave it alone at 70 psi.