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BigdaddyDupree · 04-15-2009, 04:17 PM

i dont have the mileage tune and mine isnt bad. my grandfather has a 07 with 18s the 5.3 exhaust and volant intake and gets 22mpg. and he drives harder then i do he also has 3.23 gears and that helps

04-15-2009, 04:17 PM	#7
BigdaddyDupree Senior Member Join Date: Jul 2008 Location: MACEDONIA Posts: 4,967	i dont have the mileage tune and mine isnt bad. my grandfather has a 07 with 18s the 5.3 exhaust and volant intake and gets 22mpg. and he drives harder then i do he also has 3.23 gears and that helps __________________ . What you wanna do?