Using an old thread i built my own intake tube here are some pics it works good.Attached Thumbnails

 

I took a trip after i instaled this it was 330 miles it was turn pike and about 85 miles of it was in town i got 18.3 i was geting around 16. I also put a k&n filter on it.

Thanks hill job

 

If you want to see the other thread is is ''Made my own intake tube'' it has a lot of good info,

 

This box is what the tube replaces. You use the hoses and clamps.

 

I remember that old thread! In fact, I finally got around to doing that myself this week. I took it a little bit farther along though and did the install that BrickWurx ( https://www.hummerforums.com/forum/s...ld+intake+tube ) posted last year and took the restrictive coupler tube out of the airbox/fender. I already had a K&N but it still felt weak on the hwy and was constantly downshifting to maintain 70 on cruise control. On my quick hwy run afterward to check things out I noticed it had more power on the hwy where I needed it and only downshifted once on a grade with heavy side wind. I meticulously log my mileage and consistently get hwy mileage in the mid 17's before this and after this weekend I will have some new mileage figures with the mod. I believe the claim that it's an extra 15HP & 20 Lb/Ft for (almost) free!

 

Ya i took a trip down hy 9 which is nothing but hills. My h3 would down shift every hill, but now it has to be a big hill befor it down shifts. I was geting 16-16.5 now 18-18.5 mpgs. I have a 06 i just took the top of my intake box off. I just got a cherry bomb turbo muffler so im going to see how it works out and sounds. So where most have $500 wraped up in intake and exaust i have $40 $5 spectra air filter(same as k&n) $15 on intake and $20 on muffler but well see after this weekend how the muffler turns out

 

The next step you should try is to gut the first catalytic converter for a 10+ HP gain across the board.

 

Does that set off any warning lights?

 

Got mine today. Thanks Kurtis. It looks great. Install tonight. Pics in the AM.

 

Ok Great!!! Let us know how it works!! Thanks again!!!!