This code reader has exceeded my expectations, not only is it in-depth, it performs diagnostics that most would have to bring to the store and spend lots of money to study. If you don't know anything about cars or don't understand air/fuel ratio and compression stress I would stick to the path to professional help or google youtube and get a manual for your car before doing whatever -either diagnose with it or change anything. The only complaint I have is that it's not touchscreen, but that's just my laziness
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