Do i need the LBZ mouthpiece for my 06 LLY? I know that its needed for the other LLY's but not sure about mine since it is very similar to the LBZ motor. Thanx. What will I gain?
A forum community dedicated to Chevy and GMC Duramax diesel owners and enthusiasts. Come join the discussion about modifications, towing, classifieds, troubleshooting, maintenance, and more!