DIY CP3 upgrades?

ZeroGravity58

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Mar 23, 2008
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i stumbled onto an old thread over at duramaxforum of a DIY CP3 upgrade. anyone ever tried it? it was about modding your own regulator and drilling out the front pump cover.
 

Noreaster

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Jun 13, 2007
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He took that DIY off his site couple years ago

I don't think I'm going to put that information back up. I initially wrote that article to educate the consumers so they wouldn't make poor decisions and get conned by internet gimicks and "performance shops." At the time we wrote the article there were only 2 companies modifying cp3's.

It completely backfired. Instead, people who didn't know how to modify the FCA or even what one was before the article were suddently "performance shops" and selling modified cp3's after reading the article. Many more people were conned out of their hard earned money. Publishing that info did exactly the opposite of what I was trying to do.

One of my personal customers went the 1/8th mile dragstrip here locally and was approached by a stranger trying to sell him a modded FCA for $300 on the spot. The customer asked if he had gotten the information from the relentless diesel website and the guy quickly walked away and said, "Well, I guess you already know how to do it then."
 

TNRGreene

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Sep 2, 2006
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i stumbled onto an old thread over at duramaxforum of a DIY CP3 upgrade. anyone ever tried it? it was about modding your own regulator and drilling out the front pump cover.

I used it to do mine a couple of years ago. Any others recently I either have SD or Wicked Diesels do them. It is a pain to do. :D
 

ZeroGravity58

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Mar 23, 2008
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Guess I found the article alittle late:rofl: I'm not trying to be a diesel shop just trying to get little more out of the truck. I've had a old fca apart just never knew really what to mod. Plus while I wait for my new turbo to get in I have nothing but time:D