Hooker Attitude EVC (Exhaust Valve Controller) is a fully programmable exhaust valve control system that allows you to convert the vehicle's one dimensional exhaust system into a fully programmable multi-mode exhaust management system with load based fully active valve positioning. The EVC can be adjusted to work with any vehicle and delivers superior versatility - you can go from street manners of a quiet exhaust to full race just with the drop of your right foot. Both the installation and setup processes are quick and easy.

In 1962, future SEMA Hall of Famer Gary Hooker designed and manufactured a one of a kind header that boosted the performance of his new Chevrolet. Upon placing it on other cars, he found that the headers were responsible for increasing the car's speed and power. This became the foundation for Hooker Headers and the company was established in South Ontario, California.

The cutting-edge headers became the toast of the racing world and the company became more legendary for providing the headers of nearly all National Hot Rod Association champions. Using this as a platform, Hooker Headers grew from a $100K company in 1966 to a $3 million giant in 1969. This growth was fueled by the company's pursuit of innovation in the header market. Some of their breakthroughs include the development of the straight-thru glass pack mufflers, a new thermal barrier ceramic coating, the Aerochamber muffler, engine swap headers, and the use of stylish black ceramic coating. Today, Hooker is one of the most recognized brands in the world of racing and performance aftermarket.