I have a 2003 Wrx just bought it and when I test drove it it ran fine but when I got it home the vac line from the waste gate actuator to turbo was cut and the car smelt of gas and was sputtering so I looked and the car had a leak at the up pipe and down pipe I replaced the gaskets and ran good. Now the car is still sputtering right before I make boost I am new to turbo cars and have no idea what it could be I also put new plugs in maybe needs new up pipe and dp.