I just want to let you guys know what I have going to just for information to those with similar situation.
My truck has 36K on it and was a daily driver for the last owner who seems to have ran regular fuel for its entire life.
I put the TRD S/C with the stock pulley on it two weeks ago and the X1. When Gadget and I ran it up and down the interstate, the injectors were maxed at 95% duty cycle ( yep and this is on the stock pulley).
Well I put my fuel pressure gauge back in yesterday and took it for a spin. Normal driving the FPR hovers around 40 PSI ( system is supposed to be 42.5, but my gauge has always read 40).
WOT the pressure tanks to about 33
So time for a URD pump upgrade. But I wanted you guys that are boosting trucks with a few more miles on them to know. Even with the stock pulley, the system is maxed if the filter is gummed up. I dont know how the TRD reflash would handle it, but the X1 does its job by increasing the DC to compensate
The regulator seems to be leaking too.
I had the oddly long start ever since I got the truck. When I shut it down, the FP drops from 40 psi to 0 in about 3 seconds. Which explains it
So I will be changing that too.
the quirks of a used vehicle