[Big Red 97']

I am about to dive into the realm of added fuel and would like to know if I'm headed in the proper and safe direction. I will be installing a fass 150 to do away with lift pump problems. As for the cp3, I plan to either do a bag-of-parts or an arson kit for now just to get a mild increase in fuel. Injectors and a bigger pump will be far later down the trail. What kind of gains will I notice with just the modified pump parts? I assume its ok to do the cp3 upgrade without doing injectors or nozzles? I just want to make sure I will be getting something out of this by modding the pump and that I won't be hurting anything.

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[BWAD08]

I had the arson 3 kit before I did my pump and injectors and stuff. I had a s366 at the time and fass 150 and I could tell a big difference in throttle response and being able to run a little bigger tune and benefiting from it. You will notice a difference but its not anything like a built pump!

 

[Twin_Thing]

I am about to dive into the realm of added fuel and would like to know if I'm headed in the proper and safe direction. I will be installing a fass 150 to do away with lift pump problems. As for the cp3, I plan to either do a bag-of-parts or an arson kit for now just to get a mild increase in fuel. Injectors and a bigger pump will be far later down the trail. What kind of gains will I notice with just the modified pump parts? I assume its ok to do the cp3 upgrade without doing injectors or nozzles? I just want to make sure I will be getting something out of this by modding the pump and that I won't be hurting anything.

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You honestly proly wontnotice anything as far as power cause your truck isnt asking for a whole lot of fuel with the mods u have.. On the other hand you may notice a difference in throttle response. If you had a wild tune and maybe some larger injectors and then added those mods u would more than likely notice it then.

 

[Alabama Mud Machine]

With an Arson III kit you should also notice an increased performance with stock injectors in the mid-to-high end RPM's b/c of the higher rail pressures.


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[Twin_Thing]

I Had one on my truck and noticed no power increase or anymore rail pressure:confused013:

 

[Alabama Mud Machine]

Everyone else seems to have positive things to say.


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[Twin_Thing]

Well even with the 100hp nozzles i had i was holding a steady 24-25k rail pressure with the stock pump with no problems... computer is still gonna ask for that... so maybe if you were having a hard time holding that psi with a stock pump then i think it would be a large notice if u upgraded.. so i guess it depends on the situation...:confused013:

 

[Alabama Mud Machine]

How? The stock pump with no mods can't even max out the stockers without losing RP....There's no way you were holding steady pressure with 100hp tips, and no pump mods @ WOT.... Unless the newer style cp3 is stronger than the early 2007.5 style cp3, like I have.

My stock pump with stock nozzles and decently strong tuning will make my truck fall flat on its face at anything over 3/4 throttle.


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[Twin_Thing]

How? The stock pump with no mods can't even max out the stockers without losing RP....There's no way you were holding steady pressure with 100hp tips, and no pump mods @ WOT.... Unless the newer style cp3 is stronger than the early 2007.5 style cp3, like I have.


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Well i had 100hp nozzles AND Stock Pump.. and a rail pressure guage in the mini max and with the Hot Damn Tune at WOT Heald steady 24-25k psi... so yes way.. it holds steady... Im not sure if there is a difference between the early to late 6.7L Pumps... But the early 6.7Ls have WAAAAAAY more tuning than the new ones... so maybe thats the difference also??

 

[Farmerbrown]

You must have gotten a %120 over pump from the factory. Unless you're saying you held that rail psi with two stock pumps.

 

[theyamman]

The tunning on a 2010+ is different than our trucks. I beleive the craziest tune for a 2010 is a 150hp when they released a 225hp for our trucks.

So different tuning maybe you can get away with 90 or 100hp sticks. But id still plan on a bigger CP3 in the near futur.

 

[jlmaster]

The stock pump in the 4th gens flow more then the older 6.7s from the factory!!!

 

[Big Red 97']

Well on hot damn with stock pump and injectors on mine I can barely hold 20k psi at 3/4 to wot.

I was hoping to get better throttle response and have more fuel on the top end. So from what y'all are saying it sounds like these mods will help me.

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[Twin_Thing]

You must have gotten a %120 over pump from the factory. Unless you're saying you held that rail psi with two stock pumps.

I forgot that you were in my truck with me watching my RP guage...

Like i had said earlier in the thread... Maybe the early and later pumps flow differently and also the tuning for the 2010+ are nothing like the early 6.7Ls.. So maybe thats the difference!... I know what my truck ran.

Well on hot damn with stock pump and injectors on mine I can barely hold 20k psi at 3/4 to wot.

I was hoping to get better throttle response and have more fuel on the top end. So from what y'all are saying it sounds like these mods will help me.

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Yes it sounds like in your cituation it should definitely help!!

 

[Alabama Mud Machine]

Well on hot damn with stock pump and injectors on mine I can barely hold 20k psi at 3/4 to wot.

I was hoping to get better throttle response and have more fuel on the top end. So from what y'all are saying it sounds like these mods will help me.

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Arson III will be a wonder-mod for your stock nozzles and H&S tuning. :thumbsup:


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[Big Red 97']

Awesome guys! Thats really what I was hoping to hear. Just wanted to make sure before I pulled the trigger.

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