Duramax vs Cummins
Crew cab duallie Duramax vs. crew cab Cummins. both mid 12 seconds trucks.... very close at the end... Duramax was about a half truck length ahead.
Loudest lly duramax
Duramax EFI Lope Tune
2005 Duramax with EFI Live 5 position switch withe Lope Tune