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There are three types of multipoint injection engine, the G40 is quite easy to spot. This guide is to help you spot a NZ from a GT This is a GT engine (some light modding) This is a NZ engine The NZ is a multipoint version of the AAV engine which was later developed into the GT (3F). • The NZ has the same camshaft as the AAV and was meant to produce the same 55BHP but because of the improved air and fuelling some NZ produce 60+ • The NZ throttle body has a throttle open sensor not a position sensor like the GT • The NZ has the same gearbox as the AAV • The NZ has the same compression ratio as the AAV Electrical items that are different: • Engine loom • Ecu • Distributor • Ignition coil • Throttlebody Electrical items that are the same: • Airflow meter • Temperhature senders • Oil pressure switches • Fuel injectors • Idle stabilisation valve Visible differences: • The distributor has a vacuum hose connecting it to the throttle body • The ignition coil has a 5 pin connector on top • The coolent expansion tank doesn't have a sensor • The NZ has the AAV exhaust manifold The NZ is a capable engine and with the addition of a GT cam has almost identicle power