Dual CP3 fuel pressure ?

D

dieselpriest

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Oct 9, 2010
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im installing A PPE dual CP3 kit. It looks like they only want 15psi feeding the pumps. is this important? and why?
thanks
 
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Mine hates being over 12psi.

It can/will hang the rail when cold and likely throw a "Fuel Delivery Error" code.
 
Mine had a slight lope off idle with 19psi. Its the dmax fca that doesn't like the higher pressure. I put a cummins fca on the dmax pump and never had any more issues with the higher lift pump pressure.

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I changed FCA to Cummins AND swapped to a ATS controller..and now I can go 15+ and be fine.

FCA alone didn't solve it for me.
 
Im just trying to figure out why mine has the most annoying jerk at 55-65mph crusing down the road..its driving me crazy!!
 
I'm running 26+ - to the stock cp3 for a long time and have never had any problems. However if I'm understanding you guys correctly this will cause a problem with the dual CP3 setup?
 
If the dual cp3 kit utilizes a Duramax top pump...yes Priest.
 
I'm running dual, stock pumps with 23psi at idle that drops to around 13psi at WOT with no problems. Early '07 5.9
 
There is a certain someone running 3 Cummins cp3's and feeds them with ~80psi... Just saying.
 
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