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Re: O2 sensors
Dummy o2 sensors are designed for OBDII vehicles that have had the catalytic converter removed and are setting a downstream o2 sensor code, because the downstream sensor is following the upstream sensor. Normally the upstream sensor switches voltage between 0 and 1 volt. The downstream sensor should stay steady, but when the cat is removed it also starts switching, causing a CEL.
The dummy sensor send a constant voltage siganl back to the ecm to trick it into not setting a code. I know you can get these from summit racing and jegs.
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Late 99 F250 Crew Cab SB, dp tuner stock, hi idle, 80, 120, ford ais, magnaflow ss exhaust leveling kit rear add a leafs and pro comp xtreme all terrain
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, Yukon 4.30 gears front and rear, Homemade Traction Bars, Dieselsites billet thermostat housing with 203 degree thermostat. 
Linear Mode
