wouldn't the 4:1 disc be too low? I know that 5:1 works out perfectly, but vortech only makes 4:1 or 6:1 in their recal kit. (basic vortech fmu)

Corbin could you explain the base fuel pressure of 47 psi for 97+ cars. Then when you use the fmu, fuel pressure would go to 107 psi using the 6:1 disc. It would go to 87 psi when using the 4:1 disc. It always keeps the base 47 psi fuel pressure.

Am I not correct?

Where does a base 33 psi come in?

Should I leave the stock fuel pressure regulator hooked up when I swap in a 6:1 disc with the 30LB injectors?

sorry so many questions.....more I learn, the more questions I have.

97 RS(PTE SC-61, Built Long Block, Electromotive Tec 3)It's Here!