I am having a problem with my fuel system under boost my fuel pressure drops I was wondering how you can tell if the fuel regulator is going bad or can it go bad? the pump is a BBK255gph and only 1 1/2 yrs old just put a new filter on and still have this problem Please help.

 

Is it the stock regulator or aftermarket? Boost referenced?

 

What type of fuel system? Return or return less? Going off your sig pic I would guess a return system.

 

stock return system and stock regulator I am using as boost reference