NPP-Basic Question
Pro
Joined: Feb 2012
Posts: 746
Likes: 15
I had a low battery recently that gave me a scare. I was finally able to start the car and drive it home, but with reduced electrical aids operating. One of those was the NPP. It was open all the way home. This was on surface streets at no more than 35 mph.
My ears! It was far too loud with the windows rolled up and the top on. Maybe it would have been better with the top off. I'm glad I have the NPP. Although, the sound of the base car without the NPP might have a better tuned sound at lower RPM?
Anyone know the difference in interior sound between the NPP when set open vs the non-NPP cars? Maybe my ears are just spoiled by my daily driving in economy mode
My ears! It was far too loud with the windows rolled up and the top on. Maybe it would have been better with the top off. I'm glad I have the NPP. Although, the sound of the base car without the NPP might have a better tuned sound at lower RPM?
Anyone know the difference in interior sound between the NPP when set open vs the non-NPP cars? Maybe my ears are just spoiled by my daily driving in economy mode
Burning Brakes
Joined: Oct 2013
Posts: 1,061
Likes: 130
Drone is a resonance issue. It's an annoying harmonic when different parts of your car are resonating at near the same frequency.
I pulled the fuse on my NPP when I first got the car in May of '16 and never put it back. It's loud, but does not drone. It sounds very smooth and mellow to me.
I pulled the fuse on my NPP when I first got the car in May of '16 and never put it back. It's loud, but does not drone. It sounds very smooth and mellow to me.
Racer
Joined: May 2017
Posts: 406
Likes: 96
From: Seattle WA
I had a low battery recently that gave me a scare. I was finally able to start the car and drive it home, but with reduced electrical aids operating. One of those was the NPP. It was open all the way home. This was on surface streets at no more than 35 mph.
My ears! It was far too loud with the windows rolled up and the top on. Maybe it would have been better with the top off. I'm glad I have the NPP. Although, the sound of the base car without the NPP might have a better tuned sound at lower RPM?
Anyone know the difference in interior sound between the NPP when set open vs the non-NPP cars? Maybe my ears are just spoiled by my daily driving in economy mode
My ears! It was far too loud with the windows rolled up and the top on. Maybe it would have been better with the top off. I'm glad I have the NPP. Although, the sound of the base car without the NPP might have a better tuned sound at lower RPM?
Anyone know the difference in interior sound between the NPP when set open vs the non-NPP cars? Maybe my ears are just spoiled by my daily driving in economy mode
I didn't try to open it again for the rest of the trip.
Race Director
Joined: May 2012
Posts: 15,759
Likes: 3,277
From: Phoenix area, AZ
8th Gear
Joined: Sep 2017
Posts: 8
Likes: 5
From: NH
Funny How everyone talks about the drone with NPP. Only time I can hear it is while im on it but other than that its pretty quiet. Nothing a little radio cant fix. NPP should of been the stock exhaust because a vette should not sound like it does while closed.
