With our M715 sucking down fuel at a rate of 4 mpg, we knew we had to do some-thing. We were running a Holley 670cfm Truck Avenger on our Chevy V-8, and thanks to an AEM wide-band O2 sensor, we knew ...

Whether you bought your first carbureted car or are considering doing so, I want to give you a fair warning. Be ready for every conversation about your ride to involve someone shouting from somewhere ...

I started working on cars before I could actually drive them . . . legally. I spent countless hours learning the intricacies of things, such as how much voltage it takes to make your arm go numb by ...

A lambda probe (or oxygen sensor) can be found on the exhaust system of most cars running on unleaded fuel. Having reached its normal operating temperature (of about 600 degrees Celsius!) the lambda ...

Tuning your engine with the aid of an air/fuel meter can really help you dial in your carburetor. But what numbers should you aim for? When people talk about the air/fuel ratio of their engine, do you ...