I have a hesatation issue at wot. It can be from idle or even when you hold rpms at like 1500 then rev it up it like misses and struggles to gain rpm. It seems to idle fine and run ok of you don't put the car under heavy load . I've done vacuum checks changed intake gaskets nothing seems to help the hesatation is way worse on startup and seems to get better but not good when the car gets warmer. Fuel pressure on my snap on scanner is around 39 to 40 at both idle and wot it drops a psi or two...

Injector question hesatation issue