22. After dialing in our advanced settings, we took the car for a spin and something was instantly noticeable. Our throttle response was crisp and clean. It was like we swapped out our big-block for a lightweight small block, but we still had all the grunt the 502 is known for. Since the MSD system is self-learning, after we input the basic configuration and started driving the car the Atomic continuously adjust the fuel maps to get the engine exactly where you want it. If there is a change to altitude, outside temperature, or other factors the unit will adjust accordingly, on the fly. Even for the novice, the advantages of EFI with its instant throttle response and improved mileage is only a few hours of work away.