WHP Level supported (with proper fuel, upgrades, and tuning) Stock – 425WHP
WHP Level supported (with proper fuel, upgrades, and tuning) Stock - 600WHP Our N55 "GC" upgrade consists of 100% new castings for the entire unit. The turbine housing and manifold have been cast in two pieces with all the factory flow restrictions removed. This allows our upgraded to support a whopping 600WHP. The highest for any drop in N55 upgrade.