Topdon makes a huge range of car computer tools, from simple $30 OBD2 scanners to full-featured diagnostic units (both Amazon links) worth more than three grand. The new Topdon One and One Lite are ...

Your check engine light can come on a host of reasons, ranging from a loose gas cap to a faulty engine component. If you see a light illuminated on your dashboard, you can use an OBD2 scanner to ...

It is obvious—painfully so, to some—that vehicles have become considerably more dependent on electronics. We are all aware that performance gains on our new cars often aren't as easily obtainable as ...