I purchased a kit on e-bay the other day and it arrived yesterday. It's a sensor with instructions on how to install it. It's supposed to tell my ECU that colder air is coming in advancing the timing thus more power. I asked the seller if this will damage my car and he said "NO". But I'm still skeptical. Has anyone installed this sensor?? If so, please let me know how it works or if it works at all. Mahalo!!