LS2 motor, 17 mpg on the highway. When I'm going up I70 towards from Denver, I go about 75 a 2200 RPM rather than 3500 rpm with the old I5

 

20-21 Highway with my 07 H3. I am loving reg gas here in N Texas at 91.9 cents/gallon.

 

91.9?? Wow & I thought gas was cheap in Oklahoma City!!

 

Normal 0 false false false MicrosoftInternetExplorer4 st1\:*{behavior:url(#ieooui) } Style Definitions table.MsoNormalTable {mso-style-name:"Table Normal"; mso-tstyle-rowband-size:0; mso-tstyle-colband-size:0; mso-style-noshow:yes; mso-style-parent:"; mso-padding-alt:0in 5.4pt 0in 5.4pt; mso-para-margin:0in; mso-para-margin-bottom:.0001pt; mso-pagination:widow-orphan; font-size:10.0pt; font-family:"Times New Roman"; mso-ansi-language:#0400; mso-fareast-language:#0400; mso-bidi-language:#0400;} I know that no one will believe me, but when I first bought my daughters the H3 I drove it for a month because she did not have her license yet, My Truck Chevy 4x4 extended ¾ ton truck gets 10 miles per gallon around town and the H3 was getting 20 + I know you think I am full of it but I checked it 3 times, Now that is stock wheels and tires. And engine. Now you might also want to know my son has a 2006 4x4 Tacoma king cab. and after he put on the bigger tires his gas mileage and power went to s—t. He has the V6 and the H3 has the I5 so I learned that if you change the gearing ( bigger tires ) and the weight mass and friction ( wider heaver tires ) on these small engines your fuel and performance really suffers. On my Truck 8.1 engine when I added bigger wider tires I never could tell the difference. With all that said I added the K/N cold air intake to the eH3 today, runs a lot better noticeable performance gain and fuel testing is still to come. The Gibson and a chip or tune is in the future, when I did all three – K/N , exhaust and Tune to my truck the difference is huge.

 

'07 3.7L H3 Adventure w/ factory brush guard, factory side steps, 33" Bridgestone Duellers (std. for Adv.)
89oct, Amsoil 5W30, K&N E-0773 Air Filter, Tires @ 35psi
55mph @ 1800rpm- 23mpg
However it dips below 13mpg here in metro NY local traffic

http://i419.photobucket.com/albums/p...theTaconic.jpg

 

How in the hell do I post pictures on a forum? Please Help.

 

Here are the pictures of the mod.

The fist picture is looking down at the air tube with the intake box on the left and the other shows the intake opening in the front skid plate on the left.

[IMG]local://upfiles/5480/3809E401A49C4C429216AEC28443B62F.jpg[/IMG]

[IMG]local://upfiles/5480/EA9F3760C36541898184DCFF8AC00A26.jpg[/IMG]

 

More pictures. I know what your thinking; It doesn't look very good for fording water or deep snow situations. i made a plug. I also steamlined it by replacing the plastic flex hose with a single piece of 3" heater hose. The plastic elbowis from the intake system on a 06 Nissan Titan which I had put a K&N on. I traded the Titan in for my H3. Good trade!

 

I traded my 04 Grand Cherokee for the 06 H3 and love it. I get better mpg in the H3. Mainly due to the transmission. I have a manual in mine and I added a K&N air filter. The best mpg on the highway was 19.1. I drive once a month from OH to TN. My speed did not exceed 70 mph. Typically I drive between 70 and 80 mph and average around 18 mpg. Mileage is always better heading North to South versus South to North. I can see geeting 20 mpg with the modifications and applying some hypermiling techniques. As long as I can by gas, I will drive my hummer.

 

Yep, your open pipe would be boogered up good here in MI winters on pavement. It would be MIA with a good off road foray. I think the second fender opening in the volant box negates your "ram" effect? Worth a try I guess.

I getjust under19 MPG with the cruise on 75mph, easy on the ramps and starts. I have gotten 19MPG on days when there is little or no wind, but usually the Hwy mpg is 18.8 or so.