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#2
08-14-2007, 02:25 AM
Hummer Veteran
Join Date: May 2007
Posts: 227
Re: Exhaust, Air Intake, etc
Yea, when I drive full highway, I get around 18mpg. 12 seems awefully low.
The Gibson exhaust I got for my 07 was listed for an 06. I had no install problems. I would say there is no difference between the 06 and 07 for a cat-back system. Not sure about the other stuff though.
I'm waiting for K&N to come out with the 07 kit, from what I've read, there is a difference for the aintake between the 06 and 07.
I don't think I would get the throttle body spacer. Everything I've read suggest they don't do anything, but I've never had one.
The pcm tune is worth it.
Good luck with your upgrades!
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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
Last edited by 6pack : 08-14-2007 at 02:28 AM.
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