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2004.5-2007 GM 6.6L DURAMAX LLY TS PERFORMANCE MEDIUM DUTY MP-8 PRO 2110402P
2004.5-2008 Duramax LLY Topkick TS PERFORMANCE MP-8 Pro
Easy Installation Plug & Play Undectable Does not leave fingerprint in the factory computer Excellent Choice for towing Does not increase exhaust temperatures & increases fuel mileage. The MP-8 offers a 2-4mpg increase!
In-Cab Adjustable Stock to 30% Horsepower Gain! Easy to install with step by step instructions