Stock 06 vrs NPP sound?
#1
Melting Slicks
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Stock 06 vrs NPP sound?
I want to do the NPP but am concerned about the quality of the sound of the NPP when its closed. Is the closed sound pretty lousy? , as good as stock non NPP car?
Any thoughts on this?
Any thoughts on this?
#2
Race Director
Closed is quiet for the most part until it opens at ~3500 rpm
* I guess I should add that I havent experienced a stock non-NPP system for any sort of comparing.
* I guess I should add that I havent experienced a stock non-NPP system for any sort of comparing.
Last edited by boraxman; 07-12-2011 at 03:34 PM.
#3
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I have NEVER heard someone utter "as good as" when talking about stock base C6 muffler sound.
There is no car that sounds more anemic than a stock C6 with base mufflers...
Nothing you could possibly do would be worse
There is no car that sounds more anemic than a stock C6 with base mufflers...
Nothing you could possibly do would be worse
#4
Melting Slicks
#6
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St. Jude Donor '15
"In honor of jpee"
No need to be concerned. Pick up a pair of adjustable NPP collars and set the level of sound you prefer when the valves are closed.
My take on it from memory is that the base exhaust system w/o NPP is quiet. My car w. NPP but without the collars, is quiet but just a tad louder than non-NPP equipped Corvettes. However, with the collars, I've adjusted them to where I find it perfect at all times, and so do my neighbors who know that mine is not "the noisy Corvette". Really.
(because there is one in my development that IS "the noisy Corvette" and his neighbors really don't like him...."
#7
Le Mans Master
I added it to my 06 along with the mild to wild switch. When it is closed it is pretty quiet and doesn't sound like much of anything. Open however I find it to sound just as good as any other after market "loud" exhaust out there. The mild to wild switch is great for when you want a break from the noise or when you feel like hearing all the noise your car can offer. This is my 3rd exhaust on this one vehicle and certainly is the best I've had so far. I don't think I'll be changing it again.
#8
Melting Slicks
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I added it to my 06 along with the mild to wild switch. When it is closed it is pretty quiet and doesn't sound like much of anything. Open however I find it to sound just as good as any other after market "loud" exhaust out there. The mild to wild switch is great for when you want a break from the noise or when you feel like hearing all the noise your car can offer. This is my 3rd exhaust on this one vehicle and certainly is the best I've had so far. I don't think I'll be changing it again.
Yes I did a swap from my stock into the Bassani system. The sound on it was incredible at revs and idle, but the drone killed me on my DD to work. I then swapped back into stock.
The Bassani had a huge Euro sound, very loud but a great tone to it.
didn't bark like a F car but more like a Austin Martin.
#10
Le Mans Master
Thnx for the input,
Yes I did a swap from my stock into the Bassani system. The sound on it was incredible at revs and idle, but the drone killed me on my DD to work. I then swapped back into stock.
The Bassani had a huge Euro sound, very loud but a great tone to it.
didn't bark like a F car but more like a Austin Martin.
Yes I did a swap from my stock into the Bassani system. The sound on it was incredible at revs and idle, but the drone killed me on my DD to work. I then swapped back into stock.
The Bassani had a huge Euro sound, very loud but a great tone to it.
didn't bark like a F car but more like a Austin Martin.
#11
Get the NPP. You'll love it. I don't have M2W, which as I see it is just a good excuse to keep the revs up.
Every time those butterfly valves open up I can't help but grin from ear to ear!
Every time those butterfly valves open up I can't help but grin from ear to ear!
#12
Burning Brakes
I had an '06 with base exhaust = quiet unless you really nail it. Not nearly as loud as the NPP with open valves.
I have a '10 with NPP and Mild to Wild = quiet when you want and loud when you want. NPP with open valves is a straight through muffler. Whenever I go into a tunnel, I open the valves, roll down the windows, and floor it. Music to my ears!!! Probably aggravates other drivers, but who cares.
With the valves open, you'll get some drone here and there, but not at cruising revs. NPP with a controller is one of, if not the best, exhaust for the 'Vette.
I have a '10 with NPP and Mild to Wild = quiet when you want and loud when you want. NPP with open valves is a straight through muffler. Whenever I go into a tunnel, I open the valves, roll down the windows, and floor it. Music to my ears!!! Probably aggravates other drivers, but who cares.
With the valves open, you'll get some drone here and there, but not at cruising revs. NPP with a controller is one of, if not the best, exhaust for the 'Vette.
#13
Burning Brakes
Have a GS convertible with NPP option and mild and wild remote. Great sound,nice rumble at idle love it. Main fault is with the top up at cruising speed has a bad drone so thats were the remote comes in handy. The corsa extreme has a better sound all around and no drone best exhaust on the market IMO
#14
Team Owner
#15
Heel & Toe
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I went from an 08 A6 NPP to 09 Z51 M6 standard exhaust. The NPP was considerably quieter in closed mode than the non NPP and did sound lousy especially at idle. I never tried the partial open so can't comment on that but that might be the way to go. With an A6 it was too loud to leave open all the time by pulling fuse. With the 09 non NPP, I actually like how it sounds enough to leave it stock. Having the M6 might make a difference as the engine probably revs more just driving around so I hear more engine/exhaust noises than with the Auto. Very pleased.
#16
Race Director
Sounds like a Chevy Malibu.
Your better off just pulling the fuse and listening to "The Sound of God"
roaring through your exhaust outlets.
#17
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No need to be concerned. Pick up a pair of adjustable NPP collars and set the level of sound you prefer when the valves are closed.
#18
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I just changed from standard to NPP mufflers on my 2007 Coupe. The NPP in the closed position is slightly louder than standard. Open they are like having no mufflers at all.
On the whole I am glad I made the change.
You will need the NPP control kit. I have the NPP in a box.
On the whole I am glad I made the change.
You will need the NPP control kit. I have the NPP in a box.
#19
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No need to be concerned. Pick up a pair of adjustable NPP collars and set the level of sound you prefer when the valves are closed.
#20
Safety Car
I just changed from standard to NPP mufflers on my 2007 Coupe. The NPP in the closed position is slightly louder than standard. Open they are like having no mufflers at all.
On the whole I am glad I made the change.
You will need the NPP control kit. I have the NPP in a box.
On the whole I am glad I made the change.
You will need the NPP control kit. I have the NPP in a box.