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Old 02-16-2010, 08:35 PM   #6
Gray Ghost
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Join Date: Sep 2004
Location: Terrell, TX
Posts: 1,967
Re: Fuel milage survey

Quote:
Originally Posted by steppside69 View Post
When got the truck it said the average was 17.9, But I think that was alot of highway driving. I reset the average and am doing alot of intown driving (60 miles) with a new average of 15.3 mpg. I was wondering if anyone has tried or is using some aftermarket parts to improve there mileage? I want to see if a coldair filter or something easy to "bolt on" and get a good improvement? Thanks for the info, Eric
I'd say no...there are little gains other than the 'howl' from cold air induction methods but there will be those who say yes and swear by them.

15.3 is not bad for in town, but if I were you I'd look into a tune from Blackbear....that way you know you will get an increase.
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'05 GMC Sierra SLE Z71
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