I went to purchase H2 #4 today and the dealer was telling me about the CoolCharger System that they offer. It includes a supercharger, exhaust system, air intake and a reprogramed computer. It is advertised at 450hp. The best part is that is will be covered under the normal GM warranty. I would like to know if anyone else has added this system to their H2 and what kind of results they have had with it and is it worht it?
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