Just got a vortech installed last week by a friend.Took it for a test drive that night and engine light came on...took the battery out put it back in the car was fine.then i drove it pretty hard again the other day and the engine light came on again.Took the car to auto zone and had them test the car,guy said the code read 0411 secondary air flow restricted.

 

Crossed vac lines Or backwards white check valve.