Hey Guys,
I was wondering if anyone would be able to help me figure out why I am getting such bad gas mileage.
2001 GMC Yukon SLT
5.3 L V8
Spectre Cold Air Intake
Flowmaster Super 44 Exhaust
New O2 sensors
14 mpg avg.
12 city
15 hwy
Is this normal mileage that is to be expected from this vehicle? I added the cold air to get some power, and it helped the mpg a little bit. Anything I can do?
Thanks guys