EFI LIVE | 2001 - 2005 LB7 & LLY GM Duramax 2001 - 2005 Chevy|GMC LB7/LLY Duramax 6.6L – EFI Live Tuning! Gain from 0-200RWHP on your 2001 – 2005 Chevy or GMC LB7/LLY Duramax powered truck using DSP5 tuning (DSP5 switch required) or single tunes. What the user will see as... MSRP: Was: Now: $300.00 - $500.00 Choose Options
