Maximum engine performance requires proper tuning. Until recently, engine tuners were only able to monitor one side of the engine during tuning, or both sides out of the tailpipe in a mixed ...

In the Apr. '07 issue of Circle Track, we tested FAST's new portable air/fuel meter with a race engine on a dyno and found that the tool is useful for dialing in the best air/fuel ratios for power ...

If you build engines, tune cars, or even just like mashing your foot on the throttle with conviction, you’ve probably heard the term “wideband O2 sensor” being thrown around at the track, dyno ...

Tuning a carburetor to supply an engine with the correct jetting-air/fuel mixture has always been a job that almost impossible for most hot rod owners and tuners. In the past, most performance engine ...