4" Turbo back Duals | 409 Stainless | Mandrel Bent | Lowers EGT's | Adds HP | Increases MPG's | Bolt on installation | Easy install, less than 2 hours | FITS CREW CAB SHORT BED ONLY

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Magnaflow 17903 409 Stainless 4" Turbo Back Dual exhaust for 01-09 GM 6.6L Duramax -   07-09 LMM Duramax's Require DPF delete Module/Programmer to work properly -  See below for details 

Features

• 4" Mandrel Bends
• Turbo back.
• OE Style Clamps and Hangers
• 5" Tips Optional
• Lifetime Warranty

Benefits

• Increased Flow
• Increased MPG
• Improved Horsepower
• Improved Torque

Selection of tuners that are necessary to make this exhaust work on 07-09 LMM w/o throwing engine codes

• Edge EVO Race
  
• Edge CS Race
  
• CTS Race
• PPE Hot+2 ET Race
• PPE Hot Race - $594
• Quadzilla Stealth II - Requires FREE Internet update to delete DPF