I am doing a build and my motor started as a GSL-SE, which means it originally had just one primary fuel rail with a regulator attached.
I now have an S4 intake on the motor, including the secondary injector rail, which comes with a regulator attached as well.

Will this cause any issues? My plan was just to hook both to vacuum like normal but I looked at the second gen diagram and it doesn't have a regulator on the primary rail, just the secondary.

I realize I don't NEED both but all else being the same I would rather just leave the fuel rails as is.