Just finishing Racepak install. The o/2's also have separate wires for the heater.I'm thinkin to put them on a toggle switch,,,,,on & off. 95% of my driving is on the street so that doesn't seem to shorten sensor life.If Ican make track 4 or 5 times a year I'm thrilled. But life & work get in the way.

HEMI-ITIS has no cure.
My condition is fully BLOWN!!