3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

New Cp3 = WOW !

Old 03-15-2006, 09:33 PM
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New Cp3 = WOW !

Had leaking high pressure pump replaced today . Yes, it was a remanufactured pump not a new one . The truck runs better than it ever has . It feels like I just installed a 60hp. chip . It is hard for me to believe how much that leaking pump was hurting the performance without throwing a code .
Old 03-16-2006, 04:31 AM
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yep I had the same results after rebuilding mine.
Old 03-16-2006, 06:26 AM
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I saw another thread over on TDR like this. Interesting, I found no performance difference in my truck either before or after my leaking CP3 was replaced, and it had been leaking at least a month.

My truck ran strong before, and I didn't notice any performance increase after. I guess every truck is different.
Old 03-16-2006, 08:25 AM
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Originally Posted by wexman
I saw another thread over on TDR like this. Interesting, I found no performance difference in my truck either before or after my leaking CP3 was replaced, and it had been leaking at least a month.

My truck ran strong before, and I didn't notice any performance increase after. I guess every truck is different.
Same here. I noticed no performance gains on either of the two replacement CP3s installed on my truck.
Old 03-16-2006, 04:16 PM
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Just a thought............once again I am neither an expert on CP3's nor have I ever had one replaced...................but............my thought might be that if you replaced an original leaking pump with a new oem pump you may not notice any difference.............should you buy a rebuilt pump that could have had some modifications done to it during the rebuild that could explain the noticable increase in HP........................

I realize that this is comparing apples to grapes........but I do know that on the old 12-valve pumps they could be modded quite a bit..............

maybe completely off track............just a thought.............but I would be interested to know if the guys who noticed increased HP bought their rebuilt pumps from a independent shop or through Dodge................
Old 03-16-2006, 06:41 PM
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I rebuilt my own pump no modifications just new seals.
Old 03-16-2006, 08:30 PM
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Originally Posted by wexman
I saw another thread over on TDR like this. Interesting, I found no performance difference in my truck either before or after my leaking CP3 was replaced, and it had been leaking at least a month.

My truck ran strong before, and I didn't notice any performance increase after. I guess every truck is different.
Maybe my Roktech sensor has something to do with the power increase . I did not notice a big difference several months ago when I installed it .
Old 03-17-2006, 01:13 PM
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I didn't notice any difference with the RokTek in December when it was intalled. Big difference now with a new CP3.
Old 03-17-2006, 06:13 PM
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Originally Posted by rich2500
I rebuilt my own pump no modifications just new seals.
What does it take (special tools / parts / $$$) to rebuild your own CP3? Any links to parts?
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