The torque specification for the exhaust probe in the Polaris Service manual part number 9921044 on page 4.25 shows 32 ft.lbs. The tuners at Starting Line Products felt this torque spec was too high and have been telling their customers to use 12-15 ft.lbs. instead.
If you ever pull the probe out of the pipe, you need to apply anti-seize to the threads when it goes back in, and make sure to tighten it only to 12-15 ft.lbs. If you do not use anti-seize or over-torque the exhaust probe, you can easily damage the probe. Also make sure to zip tie the wire back down just like the factory does. This tip applies to all Polaris CFI models as well as Arctic Cat 800 and 1000cc engines.