I agree with both parties here,

I do agree people should research and figure stuff out on their own, for the benefit of saving money in the end.

However, I can understand that people may not have the time or interest in doing EVERYTHING.. different people want different things..

I do agree that tuning is NOT the complicated science some people portray, it really is pretty basic/by the book/and easy.. You don't need a dyno to tune fuel or timing, it helps speed the process, but its costly and I did just fine without it.