I have been looking into tuning more closely for a while now and understand how the tuning on my daily turbo diesel works... I have done over 320000km with my tunes daily drive diesel and it still runs like a champ!! I also have several old school carb's cars that i am fairly familiar with the fueling / tuning of these basic mechanical engines.

But now that i understand how it works on my oldtimers and my daily tdi I want to understand more how a petrol/gas powered NON turbo engine is tuned like on my fathers 987 3.4S

Any advice one where to start would be appriciated