CAI Cold Air Intake Filter Piping Kit For VW Golf 5 GTI MK5 2.0 FSI Cold Air Intake Pipe + Filter Kit For 03-09 Volkswagen VW Golf GTI MK5 2.0 FSI. 3" Filter Pipe, Reduce to 2.75" Pipe to Turbo. Chassis: VW Golf MK5 GTI Motor: 2.0 FSI Turbo Turbo: Stock Turbo