If you give us the wrong codes, you are not going to get the correct answer so hope you are sure about the codes posted.
P1446 - EVAP Canister Vent Control Valve. It could be clogged vacuum lines, a faulty solenoid, presence of water in canister and a few others which requires diagnostics to confirm.
P0011 - IVT control. This is the hydraulic control system for the camshaft timing and the most likely cause of your stalling and performance problem. Low engine oil, stuck/clogged IVT solenoid valve and excessive sludging are possible causes of this fault.
P0033 - Turbocharger/supercharger bypass valve control circuit which I don't believe your vehicle is equipped with.
Wednesday, October 10th, 2012 AT 8:16 PM