i need help, early in the morning my car wont stay running, and i am getting a code 43, once it gets warmer in the day it will start right up. i am thinking its the knock sensor. i have a 1989 camaro with a 1991 350 tuned port swap i did. let me know what everyone thinks.. thanks

http://www.youtube.com/watch?v=Cva_D4NGYFU

here is me recording what it was doing this morning. the last time i start it, i try reving it to keep it running, but it just falls on its face..

 

I was getting code 43 with a bad MAF. You might be needing to get the EST (under the distributor cap) checked. After that, and if that doesn't solve the problem, check a wire diagram and see what else is in that circuit. Good luck!