Performance Air Intake for Volkswagen Jetta Passat (2005-2008) 2.0T EngineHigh Flow Performance Intake: VW Audi 2. 0T FSI Engine Maximize Throttle Response Who Its For: Designed specifically for Volkswagen and Audi owners running the EA113 FSI engine. The Symptom: The stock airbox on the early 2. 0T is a massive, restrictive plastic suitcase that creates significant parasitic loss. Youll notice a distinct lag in throttle response and a turbocharger that sounds completely muted, as if the engine is struggling to pull air