Join Date: Jan 2009
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Ideal pressure at WOT is 12psi. Running above that is fine they just tend to fall off a little bit in the last few RPM if you run higher than that. It wouldn't really be noticable though. Pretty much you don't want to pull it below 5 psi ever. And ideally stay below 18 on the top end of things. Its not as big a deal to run a bit high than it is low.
2000 2500 reg. cab 4x4 auto 577hp
09 6.7L QC LB stick, 4x4.
TOTAL PERFORMANCE DIESEL 707-545-FUEL (3835)