The COMPUSHIFT controller is a precision piece of instrumentation designed to handle the difficult environment of a car. However, it isn’t designed to run under-hood or exposed to elements, and it relies on some free airflow to provide cooling to the internal components. COMPSUSHIFT has a temperature sensor inside of the controller case and will shut down temporarily if safe operating temperatures are exceeded. Be sure to mount the controller inside the car, but away from the heater and heat from the exhaust system.