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rkcarguy · 04-27-2009, 02:08 PM

Number 3 is the best cylinder to have the O2 sensor on, as it gets short changed on cooling and will run the hottest, and also be the first to fail typically. I've found that it's more common for 02 sensors to fail on the VX and CX models because they get too hot, where the standard converter versions seem to last the life of the engine.
The O2 sensor needs to be at around 600* to operate properly, which can easily be attained by mounting the bung in the upper 1/2 of the header. Without the cat, however, warm up would be very slow and would effect performance.

04-27-2009, 02:08 PM	#17 (permalink)
rkcarguy EcoModding Apprentice Join Date: Mar 2009 Location: West Posts: 145 Thanks: 1 Thanked 5 Times in 5 Posts	Number 3 is the best cylinder to have the O2 sensor on, as it gets short changed on cooling and will run the hottest, and also be the first to fail typically. I've found that it's more common for 02 sensors to fail on the VX and CX models because they get too hot, where the standard converter versions seem to last the life of the engine. The O2 sensor needs to be at around 600* to operate properly, which can easily be attained by mounting the bung in the upper 1/2 of the header. Without the cat, however, warm up would be very slow and would effect performance. Last edited by rkcarguy; 04-27-2009 at 02:14 PM..