Wideband Air/Fuel Meters

Perhaps the king of all tuning gauges, the wideband air/fuel meter gives an accurate reading on how much air and fuel is left in the exhaust mixture. It's the most accurate way of telling whether the in-cylinder mixture is rich or lean.

These systems are more expensive than most gauges, but they're also far more informative. We consider a wideband gauge an absolute must if you are going to be tuning the air/fuel mixture on your car.