I will eventually be going turbo but that i a ways away yet. I was would like to tune my car myself for the most part. I have a little experience tuning my friends turbo civic. I am looking for good literature on tuning and was wondering what are good books for both NA and turbo tuning. I dont know how good Graham Bell's book are but i want to learn all that i can before i get to the point where i need to tune it.

Thanks