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Old 12-31-2012, 10:07 AM   #3 (permalink)
ksa8907
Master EcoModder
 
Join Date: May 2012
Location: Tampa, FL
Posts: 1,745

Volt, gas only - '12 Chevrolet Volt Premium
90 day: 38.02 mpg (US)

Volt, electric only - '12 Chevrolet Volt Premium
90 day: 132.26 mpg (US)

Yukon Denali Hybrid - '12 GMC Yukon Denali Hybrid
90 day: 21.48 mpg (US)
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problems start at operating temp? check your coolant temp sensor, does it get too hot? maybe a bad, incorrectly installed t-stat?

as far as i know, the vx uses a wideband sensor.
is the new o2 location farther from the head than stock?
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