HPFP CP4 R93 Bolt on upgrade 3.0tdi

[Moggie707]

I know the cp4 isn't the choice of pump because of reliability issues but I have found a pump that is almost a direct bolt on.
I stayed with the cp4 route because I wanted to keep it simple as support here in Australia for upgrading these cars is dismal.

I have installed the pump and done a few thousand kms on a stage 1 tune and its all working fine with no programming.
These pumps are ment to be good for 600hp on the Cummins so should be more than enough for me when I put a hybrid on.


It's a CR/CP4S2/R93/40-S
Bosch PN 0445010648

It is off a 2015-2017 Nissan Titan with a 5L Cummins is the USA
I picked it up new for $600usd and apparently they updated this pump that so it is less prone to failure by putting a special coating in the cam and pistons.

To install it I had to do the following:

-Use one of the heads off the old cp4 on the new cp4 as the outlet faces a diffent direction and you can't just rotate the head that's on there.
-tap 1 of the holes out as the new pump doesn't have threads in it. Also had to drill the mounting bracket on the engine as the bolt was bigger diamiter. The other 2 hole I didn't tap but used a lock nut and bolt as you can get to it easily.
-swap the ribbed pully from the old pump
-I swapped the metering valve from the old pump aswell as the plug is different on the new one. Also the metering valve faces the other way so it's a bit tight to get the plug on and off once it's installed.
- I wasn't sure if pump timing on the V6 matters but just in case I marked the belt and gears before I took the old one off.

 

[Bluepower]

Nice find!! Have you made logs after the install?

 

[Moggie707]

Nice find!! Have you made logs after the install?

I made a log after the install but unfortunately not before. Because I didn't intend on installing untill my water pump let go and did it at the same time. After install from 3000-4500rpm Approx 70mg/s, 1800bar fuel pressure The metering valve is sitting around 30% +/- 2% and fuel pressure regulator is around 48% +/- 2% I hope that's useful

 

[bobby singh]

By swapping the metering unit you'll have the same fuel as the stock pump
To get the best out of this pump you need to use the metering unit that came with the pump and then map the pump in, otherwise its a waste of effort.

 

[Moggie707]

By swapping the metering unit you'll have the same fuel as the stock pump
To get the best out of this pump you need to use the metering unit that came with the pump and then map the pump in, otherwise its a waste of effort.

Oh Wow that's one I did not expect thanks for the advice, so the metering valve will restrict the capacity because it doesn't flow enough? No wonder why I was surprised that ecu was controlling the fuel pressure still without complaining.