A thought would be a scanmaster from Ramchargers. The unit will allow you to track 0-2 counts, iac, coolant temps, knock, etc.
Spend a little money now, and reap the benefits later. I don't believe the cracked header would draw oxygewn in, because it's pressurised.
How bad is the mileage? Pull a plug wire at the coil pack, and see if the spark will jump 2-3" to ground. Pull a plug. You should be running ac-44's or the equivelent. 43's are too cold for your application (non racing) and will destroy mileage. 44's at .035 is ok.
And welcome to the board!
Spend a little money now, and reap the benefits later. I don't believe the cracked header would draw oxygewn in, because it's pressurised.
How bad is the mileage? Pull a plug wire at the coil pack, and see if the spark will jump 2-3" to ground. Pull a plug. You should be running ac-44's or the equivelent. 43's are too cold for your application (non racing) and will destroy mileage. 44's at .035 is ok.
And welcome to the board!
