3rd Gen Engine and Drivetrain -> 2003-2007 5.9 liter Engine and drivetrain discussion only. PLEASE, NO HIGH PERFORMANCE DISCUSSION!

Fuel Economy

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Old 08-30-2006, 10:41 PM
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Fuel Economy

At the moment, I'm completely satisfied with the power on my pickup. The fuel economy is a different issue. I have already done the cold air intake and am looking for the most cost effective way to improve MPG without reducing power output.

I'm sure a lot of you have had experience in this area and would appreciate your feedback. From previous postings, it looks like my fuel economy is about where it should be for a relatively stock truck. Good maintenance, clean filters, tire inflation etc.

Thanks for your ideas!
Old 08-30-2006, 10:45 PM
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Some people have modified the tone ring on the harmonic balancer to gain a couple degrees of timing, which seems to have helped mileage on many 3rd gen trucks. Do a search for "tone ring mod" - there were several threads dealing with it.
Old 08-31-2006, 04:52 AM
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another way is deffinatly open up your exhaust. I've had good luck with my MBRP
Old 08-31-2006, 05:51 AM
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I'm thinking about getting a Honda Civic with a tow bar to pull mine around...
Old 08-31-2006, 04:21 PM
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Originally Posted by HorseHauler
another way is deffinatly open up your exhaust. I've had good luck with my MBRP
Yank that muffler. It will help, mine is up between 1-2 mpg. From upper 16's to the low 18's. A straight pipe sounds AWESOME.
Old 08-31-2006, 09:01 PM
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Yeah, free up the intake and exaust. Good for about 1.5-2 mpg.
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