Ok . now i have installed the EGR sensor and No MORE ENGINE KNOCK... Sounds just the way i bought her..... well almost... Now i Still Have the Stalling when I brake and sound like air is leaking or like i have punctured when i accelerate the car.. Other Wise its a'ok .. Any Ideas on why this be happening... List of Things fixed...

EGR
Tune up(Spark plugs only)
Air Filter
Oil Change...


Any advice would be helpful