Does anyone recommend a switching to 4" exhaust? I have read both sides, no it dont make a difference and yes it does. Do anyone recommend a brand? If there is another post that will help please let me know.
Enthusiast
4" 07 LBZ exhaust recomendation.
Does anyone recommend a switching to 4" exhaust? I have read both sides, no it dont make a difference and yes it does. Do anyone recommend a brand? If there is another post that will help please let me know.
2007 GMC SIERRA CLASSIC
6.6L LBZ 136,000 miles
Diablo Sport Predator Tuner (MPG Tune)
LT245/75R16E
"Just because you are unique, does not mean you are useful."
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Exhaust alone makes minimal difference on the LBZ. Not like the LLY and LB7 anyhow.
My LBZ is completely stock with the exception of my Kennedy Custom ECM.
Kennedy Diesel-owner
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Enthusiast
Would it make a difference with a cold air intake?
2007 GMC SIERRA CLASSIC
6.6L LBZ 136,000 miles
Diablo Sport Predator Tuner (MPG Tune)
LT245/75R16E
"Just because you are unique, does not mean you are useful."
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