Its a chip with a cable coming off that has different positions I can flip between. Right now the "0" position is pump gas and the "1" position is for when I add 1 can of torco to a full tank of 91 octane which gives me close to 100 octane. The "6" position is to disable my car. "2", "3", "4" and "5" are unassigned, I dont know if there is another kill switch in any of those or not. So I take it that means I have a chip and not a programmer. I have been saying I have a SCT tuner, does the word "tuner" mean the same thing as "chip" or does it mean something else? Is a programer better then a chip?