tuning software for the H3
I found this looking around on some chevy colorado sites
hptuners.com makes tuning software for GM's including the H3. From browsing some of their tuner forums about the I5 engine, there's A LOT more power locked up in there! It's very involved tuning, not for the novice. But you can control all aspects from shift points to cam position to fuel management to torque mangement. All you need is a laptop and their OBDII interface and software. Their basic pkg. is $499, more if you want to input aftermarket sensors like wideband af/r and egt gauges. Which are recommended to get the most out of it.
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Slate Blue 06 H3 Auto, Lux, Chrome, Navi, Sunroof, Chrome side steps, Home Link, Trailer, & Rig lights
Volant intake, Airaid TB spacer, Custom down pipe, Magnaflow dual Exhaust, NGK iridium plugs, Nitto TG -AT295/75/16, Brush guard, tail light guards, mud guards, Chrome Shorty Antenna & bracket, Chrome lower punch grill & lettering, Chrome side moldings, smoked side marker lenses, 3-D Hummer hitch plug, Body color spare cover, & of course DEBADGED! 
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