exhaust
Thread Starter
Pro
Joined: Oct 2011
Posts: 703
Likes: 76
From: leesburg fl
St. Jude Donor '12
exhaust
my base 2016 coupe has 2 butterfly valves, 1 in each of the outer tail pipes. after looking at the book online I cant find the use for them. but on my window sticker it shows 1,100.00 extra on the cost of the car for exhaust. can someone tell me what this is for.
Melting Slicks
Joined: Aug 2014
Posts: 2,746
Likes: 916
Yours must have come with the NPP option. Search NPP exhaust here and you will learn all about it. If you change your driving mode from ECO/Touring to Sport or to Track, that exhaust valve will open and make the exhaust louder.
User manual, should cover it:
https://www.chevrolet.com/content/da...ers-manual.pdf
User manual, should cover it:
https://www.chevrolet.com/content/da...ers-manual.pdf
Last edited by lakemg; Jul 30, 2016 at 09:45 AM.
