fuelling problem

Everytime my fuel on my guage gets to the first quarter the car starts to lack power but not when it has half a tank or just above a quarters fuel in the car on the guage... I have a fuel pressure regulator installed has it previously been setup wrong, on the fuel pressure regulators guage what should the pressure read so I know how much to adjust it by?

I have 1.6 injectors too fitted, cheers guys
 
Back
Top