Volvo V50 » Equus Air/Fuel Ratio Gauge

When making engine modifications to your Volvo you can make fine-tuning safer by monitoring the air fuel ratio. There are elaborate analysis tools available, but they can be cost prohibitive for the do-it-yourselfer. Most people don't realize there is an analysis tool already on their car and all you need is a way to read and interpret the information - the oxygen sensor. You can check your modification and know what adjustments are needed for the most reliable power. The oxygen sensor is not just an expensive emissions part that doesn't benefit engine performance enhancements. The oxygen sensor constantly monitors the lean or rich condition of the engine. This air fuel ratio meter is easily installed in line to the oxygen sensor and gives easily interpreted mixture ratio information with LED lights which flash from lean to rich. If you have a turbo and are tempted to increase the boost this is a must have so that you don’t melt the pistons.