Without the OBD2 diagnostic system, it will be extremely hard to pinpoint the nuances in your car’s engine. If your vehicle is 1996 or newer, you have an OBD2-compatible car. I became particularly fond of the OBD2 system on modern cars. My experience allowed me to test drive and diagnosis a multitude of makes and models, including prestigious German cars. I worked on a lot of cars, and I really mean a LOT! I started tinkering with cars in high school. You’re here looking for the best ELM327 free downloadable software, right? If that’s the case, you have come to the right place. Need to know which software to download to use your wireless OBD2 scanner?