Exact mpg avg is 17828miles/1564gal = 11.4mpg

70% city driving 20% highway, 10% off-roading.

Ric

Exact mpg avg is 17828miles/1564gal = 11.4mpg

70% city driving 20% highway, 10% off-roading.

Ric

With 18,355 miles I am getting 13.6+ every tank and my average has risen to 13.2 and still climbing slowly with a supercharger installed at 6,000 miles.

Love the power and the fuel economy.

With 18,355 miles I am getting 13.6+ every tank and my average has risen to 13.2 and still climbing slowly with a supercharger installed at 6,000 miles.

Love the power and the fuel economy.

On the 2005 H2 you have to figure it out yourself. No more instant mpg.

On the 2005 H2 you have to figure it out yourself. No more instant mpg.

Black 04, yours has the Average MPG though right?

Black 04, yours has the Average MPG though right?

Yes Dan it still has the average MPG.

Yes Dan it still has the average MPG.

11.5 town / 15 Long Hi Way runHWY /8 pulling an 8klb trailer

W/Proflash (Econ. Mode) 12.5-13 town, haven't tested HWY yet but in RV/TOW mode I got 9 pulling the trailer.

By the way the computer in the H2 is not accurate.

11.5 town / 15 Long Hi Way runHWY /8 pulling an 8klb trailer

W/Proflash (Econ. Mode) 12.5-13 town, haven't tested HWY yet but in RV/TOW mode I got 9 pulling the trailer.

By the way the computer in the H2 is not accurate.

2 questions--

1. What is proflash
2. Is a supercharger truly good for 2 mpg extra?

2 questions--

1. What is proflash
2. Is a supercharger truly good for 2 mpg extra?

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by RDKJ:
2 questions--

1. What is proflash
2. Is a supercharger truly good for 2 mpg extra? <HR></BLOCKQUOTE>1. This PROFLASH Programmer will adjust computer settings in 2003-2004 Hummer H2 6.0L engines.

The kit comes with simple instructions and everything you need to get your engine tuned. And, in as little as 20 minutes, the PROFLASH programmer will unlock the unexploited power in your engine. No other hand held programmer on the market offers the reliability and versatility of the PROFLASH programmer.

2. I doubt it, but KenP can answer that question.

<BLOCKQUOTE class="ip-ubbcode-quote"><font size="-1">quote:</font><HR>Originally posted by RDKJ:
2 questions--

1. What is proflash
2. Is a supercharger truly good for 2 mpg extra? <HR></BLOCKQUOTE>1. This PROFLASH Programmer will adjust computer settings in 2003-2004 Hummer H2 6.0L engines.

The kit comes with simple instructions and everything you need to get your engine tuned. And, in as little as 20 minutes, the PROFLASH programmer will unlock the unexploited power in your engine. No other hand held programmer on the market offers the reliability and versatility of the PROFLASH programmer.

2. I doubt it, but KenP can answer that question.

My average is 10.5 but I just took a long trip to FL from NJ and avg. 11.2 for a 2500 mile drive at 85+ MPH most of the way.
12,000. miles
PowerFlash Power Programmer
XtremeFlo Exhaust
Xtremeflow Intake

My average is 10.5 but I just took a long trip to FL from NJ and avg. 11.2 for a 2500 mile drive at 85+ MPH most of the way.
12,000. miles
PowerFlash Power Programmer
XtremeFlo Exhaust
Xtremeflow Intake

10.7 mpg over 7500 miles.

10.7 mpg over 7500 miles.