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I searched and looked through 14 pages of threads before I just gave up and decided to post.

What does increasing rail pressure do for you? On a stock truck with just a programmer. Why would I want to increase the rail pressure? I am trying to isolate various performance enhancers and want to know this specific function.

Thanks for the help.
 

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More pressure = better atomization = more efficient fuel usage = more horsepower
More pressure = more fuel = more horsepower

With Smarty, you'll feel more mid to top end....or that's where I feel it, anyway...
 

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More pressure = better atomization = more efficient fuel usage = more horsepower
More pressure = more fuel = more horsepower
:agree2: that is what I have heard.
 

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also remember more pressure + crappy factory fuel filtration= cracked injector tips which may lead to new motor
 

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also a little pressure will help the rail recover quicker if your running big injectors or a lot of duration.
 

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I actually lost 1mpg with rp set on #2. Set revo back to default and all is well.
 

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agree with Rpainter, and every body else....

Pressure really does not help recovery, but if you have pressure recovery will be better because it takes flow to maintain pressure
 

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Pressure really does not help recovery, but if you have pressure recovery will be better because it takes flow to maintain pressure
With beta 4.2, RP will drop with shifts then slowly recover as RPM's increase with my stock pump. 3-4 shift will drop all the way down to 13k. Will adding a pressure box like Dr. P help maintain higher pressure? Or should I just save my money and go for a stage 1 or 2?
 

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yes it will help some, the real answer for long term and consistent performance is the modded CP3
So I guess I should save for a modded pump?
 

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With beta 4.2, RP will drop with shifts then slowly recover as RPM's increase with my stock pump. 3-4 shift will drop all the way down to 13k. Will adding a pressure box like Dr. P help maintain higher pressure? Or should I just save my money and go for a stage 1 or 2?
I don't see injectors in your sig, so IMO a pressure box will help.



Dodge | Commins | Forum
 

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Or get the Revo software where you can adjust RP, Timing, RPM limiter etc (at least the race tune) But, if you go anything over stock injectors, plan on buying a bag of parts or modded CP3 in order to maintain you RP. In the world of the CR, Rail pressure is a substantial part of maintaining peak/ efficient HP and longevity. Plus, I know of more than a couple people who changed nothing but the CP3 and gained HP. I gain a substantial seat of the pants gain when I went to dual modded fuelers, awesome way to go, although only necessary if you plan on laying down competitive power. #.02
 
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