So after countless hours of test procedures of why my JDM s4 swap keeps flooding I found that the jdm turbo 2s high pressure line is switched over to the farthest line towards the fire rail. Using a emission delete chart I found here it shows high pressure going straight to the lower rail then continues left to the second the regulator then return.
My question is: following this diagram on my car this feed line is for sure backwards?

Also since it some what ran with the lines backwards I know I got injector pulse and fuel pressure. But with the lines put according to the diagram. The fuel rails army receiving fuel what can cause this blockage?

Also on the secondary fuel rail. The regulator does not have a vacuum nipple only the pulsation damping why? Thanks guys

 

feed is supposed to be from fuel filter to Primary rail(lower) then up to secondary .then to the return line.
I've never seen a PD with a vacuum line.
any chance you can post pics?

 

Jspec is:

Feed line -> PD -> Secondary Rail -> Primary Rail -> FPR -> Return line

You only have one FPR, which is the diaphragm with a vac/boost connection.