I noticed that it was a bit louder. I also noticed that my E-brake is alot weaker now after the delete.I just did the EGR cooler bypass and the exhaust is substantially louder. When e-brake is engaged and rpm is @2000 when you let off the accelerator it sounds like a big rig. The exhaust drone though at 2300 rpm is too loud. Anyone done the delete and noticed a difference too.