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Old 01-14-2011, 06:01 PM
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Tuckytres Tuckytres is offline
Event Coordinator
Join Date: Jan 2007
Location: Denver
Posts: 358

Hey Bruce is it only failing NOX? If the truck is running hot (IE bad thermostat or timing advanced to much) that will cause higher NOX's. NOX's increase as combustion temperatures rise.
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