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02 Louder??

481 views 1 reply 2 participants last post by  NathanielD 
#1 ·
What I have been hearing is the new Duramax is much quieter than the older ones, is there a reason for this and how can I make my 02 more quiet?? Any Ideas??
 
#2 ·
the new LBZ's are quieter, its the way their designed. the only way to quiet down an LB7 that iv found is to run good quality fuel and a fuel additive like Power Service.
 
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