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| Gryphon Programmer (Disabled) Edge Product has discontinued the Edge Evolution 2, but we still provide support and tuning for it. If you have a question or comment relating the Gryphon (or Evolution) programmer, post it here. |
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#2
Fri, September 23rd, 2011, 10:50 PM
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Yes you need at least 1 set of o2 sensors, they tell the computer if the truck is running lean or rich. the second set behind the cat is for emission reasons i think... it senses how efficient the cat is or something like that. your truck will need custom tunes to run without the second set of sensors, but like I said, you definitely need one set for the truck to run right.
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