09-21-2007, 10:33 PM
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Hummer Guru
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Join Date: Dec 2005
Location: In a FREE U.S.A. where Marxism, Socialism & Communism is not allowed !
Posts: 5,485
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Re: H3 Engine Performance Up-grades
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Originally Posted by Jim Klee
I just purchased a 06 H3 and love the rig, but like most wanted more power. I just installed a K&N cold air intake (dyno claims 18.7 HP) I also put a flowmaster muffler and removed the stock exhaust resinator with a straight pipe. I noticed a nice increase in power, but wanted more.
I am interested in the: JET Performance Chip. The stage 1 dyno claims 15HP, the stage 2 I have not seen any dyno claims. Has anyone done the JET chip?
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