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H2 Performance Computer Software Upgrade
(Refundable $550 Core Charge will be applied to your Order)
The gains on average are about 20-25 hp. Each ECM is specifically programmed for your vehicle. This is an exchange item and a core charge applies. Core charge fee of $500 will be applied at time you place the order and will be refunded when the original core is returned. This computer upgrade is for a 6.0L 2003-2008 H2.
Goodwin Assist Hybrid-Electric Kit
GM 9½" Ring Gear, 14 Bolt Differential Cover for Hummer H2 PML-10303-2
Stage 2 Wake Up Kit 2003-2007
Hummer H2/SUT Supercharger with Intercooler by Magnacharger - Choose Year and Finish
GM 9½" Ring Gear, 14 Bolt Differential Cover PML-9504
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