running a stellar tune you will be burning the fuel completely and to its fullest potential making it so you dont have excess flowing into the exhaust and clogging the cats or destroying O2's This is just my theory but it is the only way I can think of this not destroying O2's. Do you know what octane leaded he is running and is he running it ALL the time or half and half?
"Do you guys put the key in "balls down", or up?" -BobbyT 10:28:19 03/06/09