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H3 Engine Performance Up-grades
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09-22-2009, 02:34 AM
TANDREW
Hummer Veteran
Join Date: Dec 2005
Location: NORTHRIDGE, CA
Posts: 62
Re: H3 Engine Performance Up-grades
Hey so far Iam happy with my PCM tune. Installed when truck was new 26000 miles so far no problems, what a differance it makes.
Look like some one else re-posted my first post about PCM from a while back.
TANDREW
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