Originally Posted by bondajb
What kind of pressure are people seing with the blue spring. I have had mine in for years and installed a fuel sending unit for my insight.....72psi....double checked with analog and it reads 76psi. will be installing reg return this week to get down to 50. I noticed superdiesel posted he sees a health 65-68 at wot. That is about where I drop down to but 72 @ idle seem extremely high.
72 seems high? I used a Gillete Diesel spring for 3 years without issue, that dude put out 97~100 psi at idle. In fact, it was so high, I thought I had a bad gauge! I only changed because I wanted to see what all of the hub ub was about over the blue spring. Nothing but the idle psi changed when I went to the blue spring, 58~62 PSI. Both springs dipped to about 50~55 at WFO.