Revolution Performance has created the Precision Engine Management System (EMS); a self-optimizing, easy to install, automatic tuning system that requires no resetting, no laptop, and no dyno. The EMS learns and saves memory into its own storage system, eliminating the need for tedious laptop hookup and downloading. The system adjusts almost instantly after installation with little need for manual regulation thereafter. The EMS system also takes advantage of pre-installed benefits of the factory ECU by maintaining all OEM safeguards.