Injen Technology Forced Induction Hard Parts offer additional performance for turbo charged vehicles. Each Injen downpipe is carefully engineered and tested to offer optimal horsepower and torque gains. This Injen Down Pipe replaces the factory downpipe and also eliminates the secondary catalytic converter. For this reason, this is for off road use / racing only. While it will work perfectly on your vehicle, removing any catalytic converters is illegal in many states, including California. The part number for this item is SES8022DP and it fits 2004-2005 Dodge Neon SRT-4 models.