I just installed ddp 90's and a dipricol rail gauge as well as prostreet 66. now my rail press. @ idle is 5500 and I throw a fuel pump low code even after I clear it. Just starting the truck the check engine light comes on. It also throws another code with the same numbers but without the fuel pump low. Does anyone know whats going on? Thanks in advance.

 

What is the other codes? Is it related to rail pressure low? I'm assuming that you don't have enough rail pressure to run the new sticks (well according to the computer). I see that you have a Walbro pump. What type of pressure are you seeing before the IP? If you're getting enough fuel to the IP, & depending on what HP levels you want to hit, you might want to get a modified CP3.X. Otherwise you can do the "DIY CP3 mod" from Relentless Diesel (you can do a search on DTR to find it).

 

Yeah I dont know right now what the other code is but its right at idle when I first start it. Im running 25lbs to the LP. I know I need a modded one but I thought that would be for WOT, not idle

 

Disconnect the Rail Pressure gauge and see if the same thing still happens.