Last post on Feb 19, 2010 at 9:25 AM
You are in the Chevrolet Silverado & GMC Sierra
What is this discussion about?
Chevrolet Silverado 1500, GMC Sierra 1500, Chevrolet Silverado 2500, Truck
#23 of 24 Re: 03 1500 - 13.2 MPG: Can this improve? [opc167]
Feb 19, 2010 (9:27 am)
Yes I fear that is all the mileage you are going to get, even with K&N, and a tonneau cover, I'm averaging 18.2mpg(city20% and highway80%) (5.3 liter V8), it also has to do with your rear end gearing.. if you have the higher gear set or a towing lower gear set.
My guess is make as much air flow through the engine with as much ease, then due to you large V8, up the gearing of your rear, that will likely help. if you dont live in Colorado or in the mts in general ...
I bought the mass airflow sensor and have had no luck, just that there is too much oxygen in the mix.. and an engine light is now cycling on and off
see my post here General Intake / Exhaust Mods ... #862 of 864The Generation II FIPKŪ is K&N's & Granatelli MAF by ttaupier1, might be an option
#24 of 24 Re: 03 1500 - 13.2 MPG: Can this improve? [ttaupier1]
Feb 19, 2010 (9:25 am)
I'm in Macon Ga. Since my first reply, I've been thru 2 more tanks and still getting 13.2. I asked for it though. I wanted something that would pull. I got it!