Don't do it!!! It's just a resistor that trys to fool the ECM. In a very short time, the ECM recompensates for the resistor, which eliminates any gain and usually activates your 'check engine' light. These resistors can also cause some very expensive electrical component replacement.
You can buy one of these resistors at Radio Shack for about $0.50.
^^ just as stated above, throw it out and count your loss. DO NOT INSTALL!!! worthless and unless frying your ecu sounds like fun, do not install it. not saying this will definately happen, but serious problems could come your way if you do install it. also, as stated above, it's just a transistor and your ecu will compensate for it eventually. i would wait until there is a true chip/tune out for it then spend the doe. at that point it will be well worth it.