2007.5 – 2010 LMM Duramax

H&S Performance is proud to announce the release of the Black Maxx, Mini Maxx, and XRT Pro platforms to the world of GM owners.  Along with these tuning options, we will offer a variety of exhaust options to suit your needs.  All H&S race tuners will allow code free removal of the DPF system, as well as turn off that sooty EGR system.  We also offer Active Maxx, a revolutionary new software for the diesel industry.