Chevy and GMC Duramax Diesel Forum - View Single Post - MBRP Exhaust
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post #5 of (permalink) Old 12-03-2019, 10:46 AM
DMAXfirefighter
Former GM Tech and parts
 
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Join Date: Jan 2009
Location: West-Central Indiana
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Quote:
Originally Posted by Herk537 View Post
What is the big difference between the 4" and 5" besides the size.
4in versus 5in has no difference in performance at all that you are going to see. They will sound different, but not noticeably that I have really found on an LB7. On an LBZ, yes, it has a noticeable difference (at least on my trucks) on 4in versus 5in.

Name: Matt
ASE Certified, former GM Parts guy
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Play Truck - 2002 LB7 2500HD Crew Cab Short Bed
Daily/Tow Rig - 2006 LLZ 2500HD Crew Cab Short Bed

SOLD - 2007 LBZ 2500HD Standard Cab Long Bed
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TRADED - 2002 2500HD Crew Cab Long Bed
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