| cold air intake get rid of the dpf converter get an exhaust system from an 06 or 07 classic duramax it will all bolt right up and a programmer and you will get mid 20's easy
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08 LMM, PPE Xcellerator Hot ET2 Eliminator tune level 6, AFE stage 2 intake, 5" Magnaflow turbo back stright pipe, edge insight, ts performance power play mp8 module |