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Everything you need to tune your E66 ECM vehicle with HP Tuners:
Note: Will only fit models equipped with center-mounted rear fuel tank
7 GHz processor with 1 GB RAM
Direct bolt-on installation for a hassle-free upgrade
GDP Downpipe Back Exhaust - Single (2011-2015 GM 2500/3500 6.6L Duramax LML) Size:5" Everything you need to tuneBuilt to Last: Constructed from heavy duty T409 stainless steel for maximum durability. Mandrel bent for a perfect fit and improved airflow. Improved flanges ensure a leak free connection. Effortless Installation: Includes clamps, pre welded contour bent hangers, and strong flanges for a hassle free installation. Performance Gains: Expect increased horsepower, lower Exhaust Gas Temperatures (EGTs), and improved airflow. Unleash your truck's potential
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