Ninth video in the series. In this video I deal with installing O2 sensor extenders. When I first installed the extenders I knew that I was probably going to need a second set. As they were with one extension, the sensor still made direct contact with the exhaust stream. When I noticed my mileage was dropping I decided to go ahead and install a second set. These extenders are actually 18mm sparkplug anti-foulers. That you can buy at any auto parts store for around $3 a pair, you’ll need a total of 4.
