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sand_man sand_man is offline
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Join Date: Oct 2005
Location: Cooterville, Cackalacky
Posts: 6,754
Originally Posted by WERK-I View Post
O2 sensors are most effective when placed in the path of the hottest gases. That's why the 3-lead O2 sensors have a heater element two fire up the sensor. Too far down the exhaust path, you lose accuracy.
My understanding as well. 6" located down stream of the turbo exhaust (generally before a muffler) is what seems to be considered some sort of "standard"...of course nothing is really set in stone. I never leave my O2 sensor connected permanently - just use it for taking occasional AFR readings when tuning. I currently use the Innovate tailpipe clamp, but always wonder about it's accuracy.
back in the saddle: '95 993 - just another black C2
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Old 11-02-2007, 09:17 AM
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