..let me tune you a ecu.. kthx.. and spending money on worthless chips wont help your performance infact.. it hurts it.. alot they dump fuel where they think you need it.. its better off having someone like me..*lol* stick your ecu into a friend's ls with the same mods as you and i tune it.. although it wont be 100% perfect it will be anight and day difference and it will be safer.. instead of throwing the AFR everywhere.