Dual CP-3

[More Power]

So much to learn, so little time... I've been aware of the concept for using a second high-pressure common-rail injection pump (i.e. CP-3) to boost fuel supply pressure, but I don't know a lot about how it works, and if it boosts (or supplies) both low & high fuel pressure to the system's original Bosch CP-3.

PPE offers a Dual CP-3 system that mounts in place where a second alternator would mount, and is belt driven.

I'm hoping PPE will chime in and explain how it works, what components are used, what sort of performance benefits are there beyond what an auxiliary electric lift pump might provide, and what sort of cost range we're talking about.

Ken Florey was using one on his 2002 GMC last summer during the Pull-Off, which was my first look at a dual CP-3 setup....

Thanks,

Jim

[ToddMeister]

I've also seen a few of these dual CP-3 setups last summer. Mike Tomac's and Tony Burkhard's trucks have the PPE setup installed I believe.

They are making big power with their trucks at the local truck pulls.

[dieseldummy]

Adding the second CP3 basicly doubles the volume of high pressure fuel. It helps maintain rail PSI with big injectors or a long duration tune. It works in parralell with the stock CP3 so it's only capable of supplying the same max pressure as the stock unit. I've been told that the LBZ CP3 can make more PSI, but how much more I don't know. The kits seem simple enough from a hard parts stance, but the controller part seems a bit more complex.

[Dan@PPE]

The dual CP3 pumps operate as mentioned in the previous post

[Mark Rinker]

What fuel rails are used with the dual pump setup? Do both pumps supply both rails, or are each bank of cylinders fed by one pump?

[SoTxPollock]

Along with Marks question, Do you run dual pickups at the tank, or still a single all the way to the additional pump. Just how much is necessary to not starve the single pump. Isn't that really the key? If that single pump can't supply enough volume with a lift pump for assist, you must be turning the world black when you run.

[Dan@PPE]

What fuel rails are used with the dual pump setup? Do both pumps supply both rails, or are each bank of cylinders fed by one pump?

Booth rails are fed, The factory crossover H/P lines get the pressure the same between the two rails.

[Bobo]

The LBZ pumps can make up to 29000+ psi, and should be run together….

The LB7 and LLY pumps can make up to 26000+ psi…. now remember with 2 pumps you will have double the available volume at these pressures if so desired….


Hope this answers some questions....

It does bring up a few questions. Why do you think the LB7 and LLY pumps can't make the same psi as the LBZ? Can you post a pic of your gauge on the truck you use to monitor the 29000+psi pumps you are using on your LB7(the stock rail sensor does not read that high)? I seem to be able to get over 26000psi with my LLY pumps on the ATS setup I run with F1 Diesel ovesized injectors. Maybe mine is a freak!

[Dan@PPE]

It does bring up a few questions. Why do you think the LB7 and LLY pumps can't make the same psi as the LBZ? Can you post a pic of your gauge on the truck you use to monitor the 29000+psi pumps you are using on your LB7(the stock rail sensor does not read that high)? I seem to be able to get over 26000psi with my LLY pumps on the ATS setup I run with F1 Diesel ovesized injectors. Maybe mine is a freak!

I believe our post did state.....
26000+, which means over 26000 psi....... So don't think yours is a freak.....

We do offer consumers other means of going higher psi on an LLY/LB7 or LBZ (duramaximizer), since factory tuning tables are a limiting factor in your application

We may have these gauges and special high psi senders available for purchase in a couple months.....

[dieseldummy]

[QUOTE=Dan@PPE]The dual CP3 pumps operate as mentioned in the previous post

[Dan@PPE]

Doesn't the ATS kit spin the second CP3 something to the tune of 10% faster? I'd think that would be a big no-no... I see a company or two have some beefed up singles for the Cummins to play with, why not for the Dmax?

I have not personaly worked with ATS kit, That would be question better answered by ATS...