Just kind of wondering what red light or too low of fuel pressure would be for 6.7. I know factory specs is 11.5 and I'm normally about ten. But I know 3rd gen I believe that 10 psi is way too low. I think they have the VP pump, unsure.https://19216801.onl/[/color] https://routerlogin.uno/ https://192168ll.link/

Edited April 3, 20205 yr by PaulArthur1

I dont know what pressure your truck needs but the vp trucks are all 2nd gen 5.9', 24v. 3rd gens have the CP3.

4 hours ago, PaulArthur1 said:

Just kind of wondering what red light or too low of fuel pressure would be for 6.7. I know factory specs is 11.5 and I'm normally about ten. But I know 3rd gen I believe that 10 psi is way too low. I think they have the VP pump, unsure.

The CP3 cares more about flow than pressure. All 3rd gen and 4th gens thru 2018 use the CP3. 
 

Stock is 8-10 at idle and 6-8 cruise. It can dip down to 4-5 under normal operation and is fine.  I believe the Bosch spec even allows for some vacuums, but positive pressure is the recommendation. I set the warning light on my 05 to 3 psi and only saw it with COLD fuel, that was with 3 fuel filters and 150 rwhp over stock.