I've read that you have to be careful to put the correct octane in your car depending on what tune you use. Such as, if you use a 93 Tune you will need to have at least 93 octane in your vehicle. They say if you don't you may damage your engine. I am curious to know exactly what can be damaged in the engine? I have yet to do any mods but would like to educate myself as to all of the risks. My concern would be that the gas station quality of gas. So would it be better to look for 94 octane if you use a 93 tune or 92 if you use a 91 tune? Or am I just overreacting?