>If I don't have exotic performance goals + I have the parts supported by a given OTS map + I drive in the supported climate, why should I trust some rando in h

>If I don't have exotic performance goals + I have the parts supported by a given OTS map + I drive in the supported climate, why should I trust some rando in his garage to make a map for me, over Cobb who sees way more vehicles and configurations than any single shop ever could? A lot of the time reading these forum post endorsements sound like "the tune is so good this guy is totally a scientist yo". I assume because Cobb, because of the reasons you stated, has to be more conservative than the guy in the garage can be. Whether or not that's a good thing is according to your risk tolerance/wallet size.