Modified CP3's

kino_fab

kino_fab

KTPA Tech Official
Joined
Aug 19, 2007
Messages
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Just wondering what all is on the market as far as Modified CP3's. I know Industrial Injection has thier own line of them, but that seems to be the only one I can find on the web. I also heard that alot of stage one cummins CP3 at most places is nothing more than a Stock Duramax CP3. If so, will a stock Duramax CP3 directly swap out on a cummins, or is there other modifications to do first. I am not looking to run Dual CP3's because the rules we have in our local 2.5 class states only one Injection pump. Any help would be apreciated.
 
the Dmax pump is a Bosch pump just like the Cummins pump and is a direct replacement. It's been a little redesigned to where the FCA is in a different location as far a few connections but, is basically the same pump.

Where this difference comes in I don't know but, Dmax pumps don't need lift pumps as they work on suction. Because of that.... on my dual set up anyway, I need no more than 12psi for them to perform correctly without loosing rail psi.

II is one place that does the modded CP3. Floor It is another good one. T&C Diesel does them, Darkside Diesel Worx also does them.
 
kino_fab said:
Just wondering what all is on the market as far as Modified CP3's. I know Industrial Injection has thier own line of them, but that seems to be the only one I can find on the web. I also heard that alot of stage one cummins CP3 at most places is nothing more than a Stock Duramax CP3. If so, will a stock Duramax CP3 directly swap out on a cummins, or is there other modifications to do first. I am not looking to run Dual CP3's because the rules we have in our local 2.5 class states only one Injection pump. Any help would be apreciated.
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Some ports are different, the FCA is different. Swap in a modded Dodge FCA. You will have to get a new high PSI feed line to the rail made or get one from II to Run the Dmax pump. The factory one will not work.
 
GUNNAR said:
Some ports are different, the FCA is different. Swap in a modded Dodge FCA. You will have to get a new high PSI feed line to the rail made or get one from II to Run the Dmax pump. The factory one will not work.
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the FCA used to be different as were the pumps but, they're the same now. I can swap FCA's between my two pumps if necessary. You're correct about the feed line. It's just not shaped correctly to fit to the rail.
 
I would try Floor It Diesel's modded CP3. Always heard nothing but good things and I know the owner (John Isaacs) pretty well. He takes alot of time makeing sure these pumps work properly and he stands behind them 110%. If there is ever a problem he will make it right.
 
^^^^^ I agree. John is a good dude. He builds a kick ass transmission as well.
 
triton said:
the Dmax pump is a Bosch pump just like the Cummins pump and is a direct replacement. It's been a little redesigned to where the FCA is in a different location as far a few connections but, is basically the same pump.

Where this difference comes in I don't know but, Dmax pumps don't need lift pumps as they work on suction. Because of that.... on my dual set up anyway, I need no more than 12psi for them to perform correctly without loosing rail psi.

II is one place that does the modded CP3. Floor It is another good one. T&C Diesel does them, Darkside Diesel Worx also does them.
Click to expand...
Dodge cp3 also uses suction. I ran my truck for 3 days with my fass down for the count due to a harness issue*bdh* Still had enough fuel to blow smoke and keep 4psi fuel pressure
 
I had a Darkside Stage 3 pump on my 03 which was just totaled after an accident this past saturday night. I had it on for maybe 2-3 weeks. I didn't get the best opportunity to really open it up and see what it would do, but the half a dozen times I did play around with it I got no cutout and I could tell a huge difference. RP steadily went up to 26k and hung there. Good pump IMO, and at a good price. Damn it I miss my truck......

BTW yes I took it off, and no it is NOT for sale. Going on my buddy's 03.
 
The Duramax pump flows quite a bit more than a stock Cummins pump. It is actually considered a stage 3 upgrade when installed into a Cummins.

I have a Wicked Diesels modified pump. I installed it last month and did a few other mods to get more fuel to the rail and there is a huge difference in the amount of power available.
 
Justice4all said:
The Duramax pump flows quite a bit more than a stock Cummins pump. It is actually considered a stage 3 upgrade when installed into a Cummins.
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Anything to back that up that it's as good as a stage 3? I have heard that it is better, but not enough to say it's like having a stage 3....
 
a STOCK D-MAX CP3 WOULD NOT KEEP UP WITH 180HP INJECTORS AND ELECTRONICS. i WOULD LIKE TO SEE PROOF. A stage 2and 3 pump have made over 800hp. I would like to see that on a stock d-max pump
 
Thanks for the input guys. THis is a big help. which would you guys prefer as far as the Darkside Diesel worx stage 3 or stage 4 for a truck with a modied rail, and will probably go no bigger than a set of 150hp sticks, maybe even just 120hp. I probably will not run any that big since I plan on going with a II Silver 62 turbo, jus tto start out with, but if I even plan on going bigger I don't want to get in a bind to where I will have to just turn around and buy all new stuff again to support bigger injectors in the future. Any one know the flow #'s on the DDW 3 and 4? Thanks agian.
 
HIGH TECH RAM said:
a STOCK D-MAX CP3 WOULD NOT KEEP UP WITH 180HP INJECTORS AND ELECTRONICS. i WOULD LIKE TO SEE PROOF. A stage 2and 3 pump have made over 800hp. I would like to see that on a stock d-max pump
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There are actually a whole slough of guys running the II stage 3 pump and making big power and it is a Duramax pump with a different rail feed tube.

Give II a call, they will verify it themselves. The rail feed is just a miniature Dual Feed Line that is flexible because the stock feed line doesn't work with that pump.
 
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Oh Well I Understand That, I Thought You Were Talking About A Stock D-max Cp3. I Would Consider Industrials Modified.
 
kino_fab said:
Thanks for the input guys. THis is a big help. which would you guys prefer as far as the Darkside Diesel worx stage 3 or stage 4 for a truck with a modied rail, and will probably go no bigger than a set of 150hp sticks, maybe even just 120hp. I probably will not run any that big since I plan on going with a II Silver 62 turbo, jus tto start out with, but if I even plan on going bigger I don't want to get in a bind to where I will have to just turn around and buy all new stuff again to support bigger injectors in the future. Any one know the flow #'s on the DDW 3 and 4? Thanks agian.
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Stage 3 can support 700rwhp with rail pressure at 25,000psi with just a programmer on the truck for electronics. I had a stage 3 from DDW on my cummins....never any problems and made big power. The stage 4 is plain stupid amount of fuel. They are still tinkering with it but great numbers have been achieved so far. :rockwoot:
 
So what can I sell my stock 95,000 mile old OEM pump for? cheap trade for a slightly modded duramax pump? I wouldn't mind a total investment of like $500 after sell/trade + whatever a stage 3 would be.

Anything more then $1000, might as well keep the stock one and just drop in duals. Cost per % of fuel increase is very good with duals vs, stage(1,2,3)/cp3.4 last time I checked prices.
 
That Guy said:
What? Maybe you should reread the following........
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I thought I was the only one who caught that..... I think II was calling the DMAX pump a stage 3 before pump mods got so advanced. I wouldn't call it more than a stage 2, if that, now. Those flexible lines are an accident waiting to happen.$.02
 
Can a Stage3 pump support 180hp Injectors instead of going to Dual's?
 
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