NPP mufflers...
Thread Starter
Melting Slicks
Joined: Jun 2007
Posts: 2,673
Likes: 9
From: Upstate New York
NPP mufflers...
Anyone install NPP mufflers on a C6 and just have the flapper valve open all the time? What does it sound like (idle, cruise, etc.)? Is it as loud as a Borla Stinger? Any drone?
Melting Slicks
Joined: Nov 2007
Posts: 2,240
Likes: 51
From: South Carolina
I USUALLY have mine open unless I'm leaving or returning to my block at night.
It's not really as loud as stingers or bullets, but it definitely does not sound like a factory catback.
I actually think it has a really nice "classy" sound without being downright obnoxious and screaming (I'm MODIFIED! AHHHHH!!!!)
It's not really as loud as stingers or bullets, but it definitely does not sound like a factory catback.
I actually think it has a really nice "classy" sound without being downright obnoxious and screaming (I'm MODIFIED! AHHHHH!!!!)
Pro
Joined: Sep 2007
Posts: 595
Likes: 5
From: Minneapolis MN
I leave mine open all the time, it sounds quite boring with the flaps closed. I now know I'll never be able to go back to a standard exhaust again! It does tend to drone on the highway though, so when I take it on a road trip next Spring I'll probably have to close them - a huge advantage to the NPP exhaust.
I'm kind of a newbie to performance exhaust systems, so can anyone tell me if a dual mode exhaust like the NPP is a new concept, or has it been done before? I think its a great idea.
I'm kind of a newbie to performance exhaust systems, so can anyone tell me if a dual mode exhaust like the NPP is a new concept, or has it been done before? I think its a great idea.
Melting Slicks
Joined: Nov 2007
Posts: 2,240
Likes: 51
From: South Carolina
I leave mine open all the time, it sounds quite boring with the flaps closed. I now know I'll never be able to go back to a standard exhaust again! It does tend to drone on the highway though, so when I take it on a road trip next Spring I'll probably have to close them - a huge advantage to the NPP exhaust.
I'm kind of a newbie to performance exhaust systems, so can anyone tell me if a dual mode exhaust like the NPP is a new concept, or has it been done before? I think its a great idea.
I'm kind of a newbie to performance exhaust systems, so can anyone tell me if a dual mode exhaust like the NPP is a new concept, or has it been done before? I think its a great idea.
The actual concept is not new. Adding manual ,and more recently, electric cutouts to an exhaust system is an old standby in the world of hotrodding.
For an unmodified production car though, it's been done....but not often...
