I came home from work after a grueling day and decided to put in my chip. Not saying I believed it was a high quality chip but I just wanted a little more bang. I put the chip in and 2 O2 sensor chips in the exhaust and instantly threw codes. After further review and disassembling one of the o2 chips I came to find the sensor is nothing. Its 2 wires on one side and in the middle... Is the same wires spliced with no internal components. Then I took apart the chip. Its made from simple components you could buy from radio shack for about $10. These people are crooks and please hear my word(I ignored other reviews) don't buy this unless trash. I'm out $200 but I learned my lesson. These people have no idea what their doing or their geniuses and have ripped off so many people like me. CAUTION!