2004.5-2005 Duramax LLY DSP5 Switch (FTDSP5LLY) 2001 - 2004 GM Tools 2011-2015 Duramax LML 5" Downpipe

2011-2015 Duramax LML 5" Downpipe Back Exhaust No Muffler (531006)

The smooth radius turns reduces air flow turbulence

and idle lift pump pressure

This polished 304 stainless rolled angle cut clamp on exhaust tip from Flo~Pro will add personality to your Exhaust pipe

Allow your truck to breath with this FLO PRO exhaust system

2004.5-2005 Duramax LLY DSP5 Switch (FTDSP5LLY) 2001 - 2004 GM Tools 2011-2015 Duramax LML 5" DownpipeDSP5 Physical Switch LLY A switch that comes with purple and black wires, specifically used only for LLY. FITS GM Duramax LLY 2005 2006 ADDITONAL INFORMATION NOTE: The switch is only intended for use with EFILive tunes and specified year above.