Bests & Worsts Reviews from Amazon

This item is a scam! I haven't even installed it. After reading the instructions I realized it must be a hoax. I took it apart and all that it is inside is a resister pack. That is why there is no negative and positive. It is used to trick your sensor into thinking the air is a different temperature. This may destroy your engine. I could have bought a resistor for a few cents and accomplished the same task. This chip has no software. It is complete hoax. DO NOT BUY OR USE UNLESS YOU HAVE AN OLD BEATER YOU DON'T MIND WRECKIN!!!!!