M-8 58 and 62 mm Throttle Bodies
Indianapolis based Horsepower Inc’s M-8 throttle bodies are designed to allow more airflow than the stock 55 mm throttle body. Offering 58 mm and 62 mm options, they are manufactured in-house by HPI out of billet material and include a fully CNC ported aluminum intake manifold. They are cruise control compatible and include a stock location for the air cleaner bolt pattern.
In the same routine as the earlier Touring electronic throttle-by-wire units, Horsepower utilizes the stock core electronics, and new units are turned around in about 3-5 business days.
The upgrades don’t stop at throttle bodies. HPI also offers its V2 air cleaner design for the M-8 models equipped with a contour designed velocity stack for maximum flow. 6.2 gram per second injectors are also available for the larger cubic inch applications.