All performance carburetors are sensitive to fuel pressure. Too high or too low, and your carburetors won't work to the best of their ability. Make sure you have the right fuel delivery with a fuel pressure regulator adjustable from 1 to 4 psi, through one or both outlets. The inlet and the outlets are 3/8". For use with carburetion fuel pumps only.
Datsun 240Z, 260Z, or any 280Z/280ZX adapted for carburetors
Datsun S30, S130