[llypower]

Has anyone heard or done this. I have been told, if you put the lbz cp3 on the lly(get rid of the lly cp3) it will have about a 10% increase in fuel flow. I have a good deal on one and was wanting to know if it is worth it or not.

 

[theunderlord]

See, I heard that LB7 pumps were the best...

hopefully someone will set us straight.

 

[llypower]

Idn I was just told that by the guy who I get most of my parts from. He owns the orange crush if you have heard of that

 

[gya0ma7ha]

My understanding is that the pumps on the LBZ and up were a little better than those on the LB7 and LLY. My LB7 CP3 is bad.

 

[theunderlord]

take it for what it's worth, but I've always been steered to the LB7 pump as the better unit.

is where I got my thought from.

 

[RickDLance]

I did a new LBZ pump on my LLY and I really didn't see much difference.

 

[blackdirtymax]

the lbz and up engine's cp3 pump flow 15% more fuel than those in the lb7 and lly's

 

[llypower]

bump for more info

 

[jcbDuramax]

would you really feel a diff? i mean i could see maybe it solving th low pressure code

 

[llypower]

Yea I feel the same way about it. I can turn my ppe on level 10 and not have the low pressure code though. I mean for tuning is it worth it since I am going to efi live soon.

 

[Kroggs]

I was told with my cp3 I would have no probs hitting 600-650 with twins. So I guess it's how far you plan on going. You can mod ours or lb7 ther is a diy on here for it I believe

 

[Kroggs]

Found it!!! http://www.duramaxforum.com/forum/h...22-cp3-modifications-you-can-do-yourself.html

 

[054x4dmax]

so if ur lly pump went out its worth to just throw a lbz in there?

 

[[email protected]]

I've got an LBZ pump on my LB7, the LBZ's see 26,000 rail psi vs 23,000 for LLY/LB7's so they flow a little more to keep up. It helps but not worth it unless you're maxing the LLY CP3 out, it'd also be a good idea to mod the regulator and rear cover.

 

[jcbDuramax]

Hell i have efi and running a hot tune and its not throwing and pressure codes, i have a lilly

 

[Hondarider552]

Found it!!! http://www.duramaxforum.com/forum/h...22-cp3-modifications-you-can-do-yourself.html

Close, but thats a cummins pump.

 

[xarcticzonex]

how do you bypass the pump to run a airdog 150?

 

[Kroggs]

how do you bypass the pump to run a airdog 150?

The airdog feeds the CP3

 

[Kroggs]

Close, but thats a cummins pump.

Quoting nwtdiesel and DMAX15
You can put a LBZ/LMM triangle regulator in a LB7. This kind of mod will help the Dmax pump flow 15%-20% more. Its nothing like the II 43% modded CP3. This DIY mod will help you gain a little more power and help you hold more rail PSI.

This mod IS NOT necassary unless you are losing rail psi from a very large EFI tune or possibly a PPE Hot tune. If your not losing rail PSI dont bother doing this mod.