Wideband O2 sensors play a pivotal role in the realm of automotive tuning, providing precise measurements of the air-fuel ratio necessary for optimizing engine performance. Unlike their narrowband ...

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 ...

One of the most important measurements we make while tuning an engine is finding out what the actual balance of air and fuel was inside the engine. It doesn’t matter if we have a carburetor, port ...

A once-in-a-lifetime opportunity befell three '12 HOT ROD Power Tour participants—the chance to have Holley Performance Products' Senior Product Manager and carb tuner extraordinaire Jay McFarland ...

The horsepower war rages on the street and the track these days, and fuel injection has given a new meaning to streetable power. Every hot-rodder is pushing the envelope, but doing so without knowing ...