I am having a bit of a problem trying to lower fuel preassure at idle with the SFMU. The stock fuel preassure regulator is still online. What would I have to do to lower it or to use only the SFMU to lower it with a 95 fuel rail, 440cc injectors and crane 16 cams. It does not go lower than 45-50 psi at idle. My mechanic tried compensatig with the emanage, but it has maxed out at 50% already.