The Atomic EFI is designed to replace 4-barrel carburetors to create smoother, more reliable street driving.
If your vehicle already has an electric fuel pump with a return line in place, you might not need to replace it.* If this situation fits your car, consider the Throttle Body Kit which comes with the Throttle Body, Power Module(with Wide Band O2 sensor), and Handheld Controller.
*For an existing fuel system to work with the Atomic, we recommend the system be able to maintain 42psi constant and use 3/8th or “Dash 6” fuel line rated for EFI. The Atomic can support a return fuel line if needed for your application.