EFI LIVE | 2007.5 - 2010 LMM GM Duramax 2007.5 - 2010 Chevy|GMC LMM Duramax 6.6L – EFI Live Tuning! Gain from 0-200RWHP on your 2007.5-2010 Chevy or GMC Duramax powered truck using DSP5 tuning (DSP5 switch required) or single tunes. ??... MSRP: Was: Now: $400.00 - $500.00 Choose Options
