Cold Air Intake for Hyundai Accent (2001-2005) 1.6L EngineWake Up Your Hyundai Accent 1. 6L Alpha II Engine Performance Who Its For: Designed specifically for 2001 2005 Hyundai Accent owners running the Alpha II (G4ED) engine who want better throttle response and a more aggressive engine tone. The Problem: The Alpha II is a stout little engine, but the factory air box is incredibly restrictive. It uses narrow plastic corrugated tubing that creates turbulence and pulls in hot, stagnant air from the engine