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Originally Posted by GlennWest
It's a Duramax. Had the injector balance test done. Found nothing. It runs great, pulls great, no check engine lights, Pull in toe/haul mode. I've been leaving od on. Try with od off next pull. WHat about you guys?
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Your ok with tow haul on, won't effect mileage too much, just ups the shift pints a bit so not to drop out of the sweet spot too far. Turning off the OD will only use more fuel.
If you want better mileage and a wind deflector on a totally stock truck try this: :lol: