You're driving along and your car starts to stutter and stumble. Then, just as soon as it starts, it goes away. You forget about it until it happens later in the week or the next day. Is your car ...

Your car's engine needs a very specific diet of air and fuel to do its job, and it's the fuel pressure regulator's (FPR) job to feed it the right amount. The gadget is relatively tiny and can fit in ...