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Go Back   Hummer Forums by Elcova > Hummer H3 Discussion Forums > Technical Discussion and Customizing your H3

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  #1  
Old 08-15-2008, 04:52 PM
6pack 6pack is offline
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Default Re: Jersey's H3 and the Tale of 25MPG

I've run two tanks of the CA40 through at this point. The first one I had no increase in MPG but did drive many more city miles than my average amount on that tank. The second had still some more city miles but I noticed about a 5-10% increase in MPG. I'll keep posting...
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2007 H3 Lux/Adv 5 speed, Gibson Extreme Duals cat-back, K&N FIPK, PCMforless tune, SAW torsion bars, Samco Shackles, Fox Racing shocks, Trail Duty Bump Stops, 35" ProComp Xterrain tires w/Tactical Rims, Gobi Stealth Rack
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  #2  
Old 08-26-2008, 05:14 PM
6pack 6pack is offline
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Default Re: Jersey's H3 and the Tale of 25MPG

Third tank, average type driving for me, no difference in mpg.
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2007 H3 Lux/Adv 5 speed, Gibson Extreme Duals cat-back, K&N FIPK, PCMforless tune, SAW torsion bars, Samco Shackles, Fox Racing shocks, Trail Duty Bump Stops, 35" ProComp Xterrain tires w/Tactical Rims, Gobi Stealth Rack
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  #3  
Old 08-26-2008, 06:24 PM
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Desert Dan Desert Dan is offline
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Default Re: Jersey's H3 and the Tale of 25MPG

By not trying on mileage here were my latest results..
Not surprising

16.5-17 mpg
75-85 mph with ac on and roof rack on I-10
Tires at 35 psi
outside temp 100+

PS to LA trip 125 miles
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H3 2006 Adventure/Lux/5-speed/sunroof/rock rails/underbody skids/block heater/Boulder Grey/ Defender Roof Rack

Jeep TJ Rubicon 2003
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  #4  
Old 09-04-2008, 02:23 PM
6pack 6pack is offline
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Default Re: Jersey's H3 and the Tale of 25MPG

Fourth tank, average driving again and no MPG difference.

I'm almost through the fifth tank and it is the same as the others. I'm also noticing a bit of a rough idle. I think this tank might end my experiment. Sorry, but I've seen no improvement.
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2007 H3 Lux/Adv 5 speed, Gibson Extreme Duals cat-back, K&N FIPK, PCMforless tune, SAW torsion bars, Samco Shackles, Fox Racing shocks, Trail Duty Bump Stops, 35" ProComp Xterrain tires w/Tactical Rims, Gobi Stealth Rack
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