Abstract: Disclosed herein are devices and methods of use directed to automotive throttle body adapter plates with various bolt patterns. In one embodiment, the throttle body adapter plate is comprised of a main body element configured with a bolt pattern on one end to connect to an automobile's intake manifold and further configured at the opposing end with another bolt pattern to connect to an automobile's throttle body. In another embodiment, the internal airflow shape or profile is configured for optimal flow having an outside inlet diameter and tapering down to the intake manifold outlet diameter.