Nissan 370Z Forum - View Single Post

SouthArk370Z · 12-07-2014, 07:04 AM

I suspect that Element600ee is right and the car is just reacting to different temperatures. As several others have said, mufflers usually get louder over time. I've never run into one that got quieter but I don't have much experience with modern exhausts.

Check your MPG - if you have a restriction, it may show up there.

12-07-2014, 07:04 AM	#8 (permalink)
SouthArk370Z Premium Member Join Date: Nov 2010 Location: South Arkansas Posts: 8,435 Drives: 2014 Challenger Rep Power: 324198	I suspect that Element600ee is right and the car is just reacting to different temperatures. As several others have said, mufflers usually get louder over time. I've never run into one that got quieter but I don't have much experience with modern exhausts. Check your MPG - if you have a restriction, it may show up there. __________________ Steering Lock Links - Search The370Z Bookmarklet - FSM @ NICOclub Mankind has progressed past the need for war but we haven't evolved that far. - NachoMahma