I have an 88 RX-7 non-turbo.. starts runs ,revs fine,,when driving as soon as you get to where the secondary injectors kick in boggs down,,, I changed the fuel filter, fuel pump, and fuel pressure regulator,,the fuel pum doesn't shut off when you jump the connector and turn the key on,,you can here the fuel flowing the whole time under the hood,,no leaking fuel under the hood,,but u can here it flowing in the system,,is there anothe valve that may be leaking sending the fuel back to the tank,,?