O2 sensor protector

Here is a O2 sensor protecor for highly tunded engines. It is used in applications that the normally will reduce the sensor life a lot like in two-stroke engines or when running race fuel etc. Protectors are available from Koso and Innovate.

The second pic shows the price for running too much ignition advance. It's a small two stroker I have but the outcome will be the same for any engine when this happens.

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