2025 Duramax Exhaust Tips And Tricks. Pay later or over time with affirm. I’ll try and post as much as i can and as often as i can to keep everyone updated.

From what i can figure it’s because when removing the old tip, the venturi device is removed which will create out of spec exhaust pressures.  — i’ve read that changing the exhaust tip on a 2025 will cause errors/codes.