Common Terminology and Phrases
IT can be hard to understand some of the terms for the genesis coupe, so we've compiled a list of the terms most people will need to learn here. If you notice anything missing, please let us know!
--Gen/Genny/Genesis/GenCoupe: All of these are common nicknames for the Genesis Coupe platform. Used interchangeably. For the intents of this write-up, Gen will be used exclusively.
--BK/BK FL/BK1/BK2: BK is the chassis (Body) designation for the Gen. There are two generations; BK and BK/FL, commonly referred to as BK1 and BK2. BK1 spans the years of 2010 - 2012 while BK2 spans the years of 2013-2014 for the 2.0T and 2013-2016 for the 3.8.
--2.0T/3.8: These are the two engine options for the Gen. The 2.0T is an inline 4 cylinder turbocharged, port injected (MPI) engine, the Theta (BK1) and Theta II (BK2). The 3.8 is a V6 Naturally Aspirated engine that is port injected (Lambda MPI for the BK1) and direct injected (Lambda II GDI for the BK2).
--Naturally Aspirated (NA)/Forced Induction (FI): Naturally Aspirated (NA) means the engine does not have any method of pulling air in besides normal vacuum. Forced Induction (FI) means there is an auxiliary method that helps feed extra air to the engine (Turbocharger, Supercharger). For more info on NA vs FI,
--Port Injection (MPI): Port Injection refers to fuel injection into the engine via ports in the intake manifold. The injectors sit outside of the combustion chamber and only fire once per combustion cycle. This is a relatively simple system and the injectors are defined by flow rate (CC/min or Lb/min). A larger flow rate means an injector can flow more fuel when it is "On" to aid in more combustion. For more info on how fuel injection works, click For which injectors to use, go
--Direct Injection (GDI): Gasoline Direct Injection refers to fuel injection directly in the combustion chamber. The fuel injector tip sits inside the chamber and sprays the fuel on top of the piston. Direct Injection carries the benefits of being able to fire the fuel injector almost indefinitely due to a difference in design from Port Injection, and at almost any time in the four-stroke cycle. Injectors can also be fired more than one time per cycle or stroke for various reasons. Direct Injection differs from Port Injection in that there is a secondary fuel pump on the engine, specifically on top of the camshaft, a Cam-Driven Pump or High Pressure Fuel Pump. This pump increases fuel pressure from the 40-80psi low pressure side to over 900-4500psi on the fuel rails. This increase in pressure is to allow the fuel to be injected directly into the combustion chamber. For more info on Direct Injection, click
--Spark Plugs; Heat Range: When Upgrading (or even maintaining) your Gen, one of the most important things to keep in mind is that you need Spark Plugs in good condition and of the right heat range. Spark Plug heat range refers to the amount of heat that the plugs can transfer to the cylinder head from the combustion chamber. In Layman's terms, how quickly can the spark plug dissipate heat. A "Colder" heat range means the plug can transfer more heat out of the chamber in the same amount of time than a "Hotter" plug. Colder heat range plugs are a necessity for higher power output or higher boost levels than stock, since running too hot in the combustion chamber can cause spark knock or detonation. A safe rule to follow is "For every 100hp additional, go one step colder." This rule is more of a guideline since every application is different, however for the Gen it seems to work well. Watch a video explaining this, See which spark plugs you need,