Still trying to work through a p0087 code on my friend's 06 vin 2. The entire fuel system has been replaced now and it's still setting the code and putting the truck into reduced power. Is there a way to turn limp mode off for that code so I can log and see what the rail pressure is doing if the truck doesn't limp? I want to see if that pressure drops and stays low or if it bounces back. Completely stumped on this truck. New fuel lines, new cp3, new injectors, ect ect and still throwing low rail pressure codes. Very frustrating. I don't want to turn the code off and disable limp as a solution because that's obviously not a good idea but I would like to see what that pressure does if the truck doesn't limp.