airflow plus bigger tires = bad mpg?

By Mortis Mango
July 16, 2015 in 2014-2018 Silverado 1500 & Sierra 1500

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SouthernSilveradoGuy85

Posted July 16, 2015

Remember your odometer is no longer reading the distance traveled correctly if the new tires are taller. I doubt that a CAI is going to affect your A/F ratio enough to be the problem.

It wouldn't change it as much as what the OP is experiencing, but the K&N intake kit dropped my city MPGs by about 2 in my 98 and I didn't change how I drove it since it already had exhaust.

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