Edelbrock Performer RPM intake manifolds have a high-rise, dual-plane layout, with a 180 degree firing order. They produce incredible top-end horsepower, while retaining good throttle response. Performer RPMs have larger plenums and runners to match the free-flowing exhaust, high-lift cams, and other modifications of a high-output engine. They're intended for high-performance street or competition engines that run from 1,500 to 6,500 rpm.
Edelbrock EGR-equipped Performer manifolds are intended as a direct functionally identical replacement for their O.E.M. counterparts. All exhaust emissions or emissions related stock components are intended to be retained and functional. Non-EGR equipped manifolds will not accept stock EGR (Exhaust Gas Recirculation) equipment. EGR systems are used on most 1972 and later model vehicles. Check local laws for requirements.
The Edelbrock 7121 does not have provision for exhaust heated choke.
One of the keys to manufacturing a great product is Research and Development. Edelbrock's dedicated R&D team is comprised of engineers who are automotive enthusiasts. They understand what it takes to design a product that improves your Mustang's performance because they know how it feels when a vehicle is running at optimum power levels.
Having the most up-to-date tools to design these products, such as Pro/Engineer® software, gives their engineers the tools they need to achieve design goals. This three-dimensional computer software takes a project from an idea to a finished product in a shorter period of time than was previously possible. Combined with tools like the flow bench and electronic test equipment, Edelbrock's R&D team has what it takes to put years of hands-on experience and love of the automobile to work.
At Edelbrock, this commitment to engineering and development goes into all our products! Shop LatemodelRestoration.com for your Edelbrock intakes, cylinder heads, and other Mustang performance parts!