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Message: [QUOTE="Wayne, post: 795437, member: 863"] Thanks for sharing your data Bentley. I'm assuming since the kit is out that you recommend factory ford supply pressure to the cp3. I haven't looked into it, but it makes me wonder if pump life is shortened or extended by feeding either of these pumps with pressure other than what gm and ford spec'd out. The kit utilizes a duramax cp3, right? Seems to work pretty good in duramax land to add a supply pump, but I may just be thinking out of my butt. I'm a little short on sleep now, so I may read this in the morning and wish there was a delete button. Oh, well. Kaleb & Dan: if you want to maintain factory ford spec pressure to the cp4, and 15ish to the cp3, just throw a regulator inline after the cp4, but before the cp3. If it were my truck, I would need to see Bosch's spec, validated aftermarket pressure recommendations, or go off of Ford's/ Gm's numbers unless I was prepared to pay potential consequences. Adding a regulator may very well be a waste, but I would have more peace of mind going with ford/gm spec if I couldn't get any other validated number. If 15 psi proves in the long run to be sufficient supply pressure to the cp4, I would want to add a resistor, or replace the sensor so the low pressure light still works instead of just unplugging it. Ramblings complete. [/QUOTE]

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