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10-08-2005, 02:42 PM
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Hummer Veteran
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Join Date: Jul 2004
Posts: 112
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Okay... I had an 03' SUV that got 10.2 then I added the K&N with a tornado thing, I ended up getting 11.5'ish...
Now, I have an 05' SUV with the stock air filter, box and on a trip from WA state to CA, I was getting 15.5mpg...
Were all of the planents in alignment or do the new H2 get better MPG?
Without the K&N the truck's cruise control works well, with the 03' and K&N if I was going up a hill, it feel like it dropped into first gear and gunned the gas.
(thinking about it and I'm no tech but the fuel and air have to be mixed correctly... the restrictive stock airbox lets only so much in so it would seem that less gas is used...
With the K&N, LOT's of air gets in so LOT's of gas is used...
Is this how that works? Either way, I hope that my MPG stays the same, I'm very pleased so far!
__________________
03\' Pewter Adventure SUV (sold)
05\' Pewter Lux SUV
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10-08-2005, 02:42 PM
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Hummer Veteran
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Join Date: Jul 2004
Posts: 112
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Okay... I had an 03' SUV that got 10.2 then I added the K&N with a tornado thing, I ended up getting 11.5'ish...
Now, I have an 05' SUV with the stock air filter, box and on a trip from WA state to CA, I was getting 15.5mpg...
Were all of the planents in alignment or do the new H2 get better MPG?
Without the K&N the truck's cruise control works well, with the 03' and K&N if I was going up a hill, it feel like it dropped into first gear and gunned the gas.
(thinking about it and I'm no tech but the fuel and air have to be mixed correctly... the restrictive stock airbox lets only so much in so it would seem that less gas is used...
With the K&N, LOT's of air gets in so LOT's of gas is used...
Is this how that works? Either way, I hope that my MPG stays the same, I'm very pleased so far!
__________________
03\' Pewter Adventure SUV (sold)
05\' Pewter Lux SUV
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10-08-2005, 05:09 PM
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Hummer Expert
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Join Date: Dec 2004
Location: Call-ee-FOR-nya
Posts: 853
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David:
I have an 05 and have gotten similar milage on long trips. The roads have to be predominatly freeways that are flat and straight [downhill is cheating; sharp curves scrub off momentum], you've got keep it at 60 mph or less, and you need to use the cruise control as much as possible.
Does any of this apply to the trip you took?
Best regards,
George SSSS
__________________
Black 2005 Adventure Series; factory touch screen GPS w/XM radio; factory express open/close sunroof; reclining second row seats; Warn 9.5ti Multi-Mount Winch; Gobi Stealth roof rack with PIAA lights; HotShot windshield washer fluid system
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10-08-2005, 10:47 PM
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Hummer Veteran
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Join Date: Jul 2004
Posts: 112
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Hi,
Yes it does... I was keeping it at 60. The ave mpg guage listed 16.1 but when at the end of the trip it was actually around 15.4...
What do you think about the stock filter vs the K&N and the air/fuel mix situation? If I switch over to the K&N.. will I suck more gas? (cuz it's letting in more air?)
__________________
03\' Pewter Adventure SUV (sold)
05\' Pewter Lux SUV
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10-08-2005, 11:31 PM
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Hummer Authority
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Join Date: Sep 2005
Location: Ohio
Posts: 1,055
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I average around 13.0 in town and between 14.0-15.0 on the highway. So that sounds about right.
By the way I also have an 05'.
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10-09-2005, 03:30 AM
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Hummer Veteran
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Join Date: Feb 2004
Location: Winnipeg, Manitoba, Canada
Posts: 172
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90 lbs of air pressure in the tires?????
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10-09-2005, 05:12 AM
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Hummer Veteran
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Join Date: Aug 2005
Location: SoCal
Posts: 95
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How do you guy get this mpg. I live in socal, I only get 10-11city and 11-12 hwy. Driving very very mellow.
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05 Lux Suv
95 Ducati 916
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10-09-2005, 04:36 PM
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Hummer Expert
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Join Date: Dec 2004
Location: Call-ee-FOR-nya
Posts: 853
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Nixxster: My city MPG is closer to yours. Congenital heavy right foot, I think. For Fwy driving, flat roads and cruise control under 60 are the trick.
David: I've seen posts where people say the after market air intakes don't improve anything (power or mpg) and they are noisy. I'd say to do some searches of the threads in this forum for info. Alternatively, you could start a new discussion topic with "K&N" or "after market air intakes/filters" in the title to get the latest info from the membership.
Best regards,
George SSSS
__________________
Black 2005 Adventure Series; factory touch screen GPS w/XM radio; factory express open/close sunroof; reclining second row seats; Warn 9.5ti Multi-Mount Winch; Gobi Stealth roof rack with PIAA lights; HotShot windshield washer fluid system
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10-09-2005, 05:36 PM
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Hummer Professional
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Join Date: Aug 2005
Location: HQ USAREUR & 7th ARMY, ODCS
Posts: 289
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I just picked up my new 2005 H2 and drove back from a 500 miles trip. The MPG came out to 14.2 gal.
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2005 H2 SUV (Yellow)
2003 Vert Supercharged
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10-09-2005, 06:19 PM
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Hummer Guru
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Join Date: Nov 2004
Location: Eastern Washington
Posts: 2,452
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Just drove 700 miles last night. If I kept the cruise on 82 or so, I averaged about 11.3 mpg...same as city  ...If I cruised at anything below 70 I averaged 14.5 mpg...
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'03 H2
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10-09-2005, 06:31 PM
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Hummer Expert
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Join Date: Jul 2005
Location: Colorado
Posts: 671
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Tire pressure can have an effect too. I've noticed that when I fill to 42 psi I get better mpg than at 35 psi. It is less than 1 mpg diff though.
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10-09-2005, 08:05 PM
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Hummer Veteran
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Join Date: Aug 2005
Location: SoCal
Posts: 95
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Can't go 60 on the hwy. The speed limit is 65, slower then that might get you shot 
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05 Lux Suv
95 Ducati 916
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10-11-2005, 05:25 AM
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Hummer Professional
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Join Date: Aug 2005
Posts: 258
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At 60 mph my average is 19 mpg on hgw
At 80 mph avg is 14 mpg on hgw
But we use 98-100 octane gasoline...
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10-14-2005, 04:44 PM
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Hummer Veteran
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Join Date: Jul 2004
Posts: 112
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19mpg NICE!
I just use regular... it's what the book calls for.
I'm sure as soon as I take it off road, it will be down to 2mpg
__________________
03\' Pewter Adventure SUV (sold)
05\' Pewter Lux SUV
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10-14-2005, 05:02 PM
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Hummer Expert
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Join Date: Nov 2002
Location: Phoenix Arizona
Posts: 745
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Last week I was comming back from the Grand Canyon. I have a 03 H2 and I was getting 19.2 MPG. that was going at a speed of around 45 to 50 MPH. all of it was Mountain Driving, and I was going into Flagstaff.
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10-14-2005, 06:22 PM
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Hummer Expert
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Join Date: Dec 2004
Location: Call-ee-FOR-nya
Posts: 853
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Let me state the obvious [one of my specialties]: The H2 has the aerodynamics of a brick. When you increase your speed from 50 to 80, the wind resistance is probably doubled and milage drops way off.
I don't care, I love the look of it.
George SSSS
__________________
Black 2005 Adventure Series; factory touch screen GPS w/XM radio; factory express open/close sunroof; reclining second row seats; Warn 9.5ti Multi-Mount Winch; Gobi Stealth roof rack with PIAA lights; HotShot windshield washer fluid system
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10-14-2005, 06:41 PM
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Hummer Professional
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Join Date: Aug 2005
Location: HQ USAREUR & 7th ARMY, ODCS
Posts: 289
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Originally posted by Ernie Italy:
At 60 mph my average is 19 mpg on hgw
At 80 mph avg is 14 mpg on hgw
But we use 98-100 octane gasoline... </div></BLOCKQUOTE>
Same here. I use Super Plus or Ultimate.
__________________
2005 H2 SUV (Yellow)
2003 Vert Supercharged
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10-14-2005, 07:39 PM
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Hummer Authority
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Join Date: Sep 2005
Location: Ohio
Posts: 1,055
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<BLOCKQUOTE class="ip-ubbcode-quote"><div class="ip-ubbcode-quote-title">quote:</div><div class="ip-ubbcode-quote-content">Same here. I use Super Plus or Ultimate. </div></BLOCKQUOTE>
Same here.
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10-16-2005, 05:56 AM
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Hummer Expert
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Join Date: Dec 2004
Location: Call-ee-FOR-nya
Posts: 853
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You might get a little better fwy milage by removing the roof racks. My guess is they create some drag at high speed.
Just a thought. May or may not be worth the trouble.
George SSSS
__________________
Black 2005 Adventure Series; factory touch screen GPS w/XM radio; factory express open/close sunroof; reclining second row seats; Warn 9.5ti Multi-Mount Winch; Gobi Stealth roof rack with PIAA lights; HotShot windshield washer fluid system
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10-22-2005, 09:21 AM
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Join Date: Oct 2005
Location: Toledo, Ohio
Posts: 2
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I had the air and exhaust upgraded with the promise of better gas mileage and more power.
I got more power, but only a slight increase in gas mileage.
Next time I fill up the 06 H2, I'm trying 93 octane.
__________________
Jeff
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