4" 07 LBZ exhaust recomendation.

[TJNE]

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.

[Kennedy]

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.

[TJNE]

Would it make a difference with a cold air intake?