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The Perfect Axle Back Exhaust

Old 10-10-2018, 02:41 PM
  #21  
Ladensack3
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Oh wow. How do I know if I have that option on my car? Sorry just bought it
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Old 10-10-2018, 02:47 PM
  #22  
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Stereo and amps? NPP open 24/7 is my kind of music!! if you don't think an LS3 sounds badass at WOT, then may I suggest you turn in your "mancard"!!
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Old 10-10-2018, 02:50 PM
  #23  
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Originally Posted by JockamoIPA View Post
Bullets all the way!
yessir! BB Bullets, LG long tubes, no cats for the win.
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Old 10-10-2018, 07:16 PM
  #24  
farmington
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When I got my 2012 base coupe the exhaust was stock and too quiet. Was going to go the NPP route then I found a great deal on a Borla S Classic (Stinger). Love the sound now but want to go with headers and a catless midpipe. It it becomes too loud I will go back to the factory mufflers ( I kept them).
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Old 10-10-2018, 07:49 PM
  #25  
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Originally Posted by farmington View Post
When I got my 2012 base coupe the exhaust was stock and too quiet. Was going to go the NPP route then I found a great deal on a Borla S Classic (Stinger). Love the sound now but want to go with headers and a catless midpipe. It it becomes too loud I will go back to the factory mufflers ( I kept them).
I have Z06 exhaust on my LS2 all the back to the Borla Stingers and they sound amazing. Get lots of positive comments.
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Old 10-11-2018, 01:16 AM
  #26  
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Originally Posted by Riveroger View Post
I have Z06 exhaust on my LS2 all the back to the Borla Stingers and they sound amazing. Get lots of positive comments.
Borla S-type on my grand sport......mellow, no drone, and sounds great when you open it up ....just my 2 cents
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Old 10-11-2018, 08:21 AM
  #27  
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The Borla S , at least to me, sounds more like an exotic. Higher pitched than other axle backs.
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Old 10-11-2018, 08:41 AM
  #28  
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Stock NPP exhaust with the muffler mod and a mild2wild is the best compromises between sound & cost IMHO.

U.M.
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Old 10-11-2018, 09:42 AM
  #29  
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Originally Posted by Ladensack3 View Post
Oh wow. How do I know if I have that option on my car? Sorry just bought it
Take a look at your exhaust between the mufflers and the tips. If you see some actuators on top of the exhaust you have NPP, if not, you don't.
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Old 10-11-2018, 10:15 PM
  #30  
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guyzer, for less than 25% of what you spent on your various exhaust mods, you could have installed a good, used, original NPP set of muffs and controls. Best of both worlds, though is never outrageously loud, like the SLP. Cruising at 75 is dead quiet.
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Old 10-11-2018, 11:16 PM
  #31  
Guyzer7
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Thanks for your comments. I know. I learned the hard way$$$. I went back to my original post and wanted to update my comments. I still have the stock exhaust and did not change the tips. I am still not satisfied with the whisper quiet stock exhaust and I actually believe the car had more torque with the B&B PRT, or it just felt like it could breathe better.

It is not easy to find guys or car shows with Vettes that have different setups as has been suggested here. I am actually going to drive a Grand Sport tomorrow that has an NPP, so maybe that will be the ultimate solution. I am also curious about the B&B Fusion, that has the bi-modal set up. They say when it is closed it sounds a slightly louder than stock but when it is opened it is like a bullet style, straight through loud exhaust. I don't mind loud once in a while like when making an entrance, pulling up next to another sports car or cruising the Esplande at sunset.

So my current status is I am going to go drive a Vette with the NPP and then hopefully find someone with the Fusion bi-modal exhaust I can listen to live. I have a feeling it is going to come down to either of those two. Will update when I make my decision. The reality is video or sound clips just don't cut it. You have to actually listen to it live AND drive it to hear what the sound levels are in the cabin. The search for the perfect axle back exhaust continues!

Last edited by Guyzer7; 10-11-2018 at 11:18 PM. Reason: typo
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Old 10-12-2018, 07:24 AM
  #32  
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Me personally, the best and cheapest set up would be the NPP exhaust with headers and the Mild to Wild switch.
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Old 10-12-2018, 02:00 PM
  #33  
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Akrapovic... (in stock)

Or Borla

-Josh
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Old 10-14-2018, 10:51 AM
  #34  
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Originally Posted by 360Rocket View Post
yessir! BB Bullets, LG long tubes, no cats for the win.
I have Corsa Xtreme with Cutouts and I can at least "lessen" the noise a little. No possible way I could tolerate your setup constantly!
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Old 10-14-2018, 11:29 AM
  #35  
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Originally Posted by dpigguy View Post
The perfect exhaust is the stock set up but with NPP. The best of both worlds - quiet when desired, louder when appropriate.
I agree .... when two simple modifications are made. NPP is perfect when a mild-to-wild switch is installed and 'clips' are added to the butterflies so they can't close completely. I went with a dead pedal foot switch. It's a perfect and simple solution. I also installed speed nut clips on the butterflies so they are proped open approx 1/8" when in the 'mild' position. It provides the sweetest tone with NO highway drone.

Last edited by jost6453; 10-14-2018 at 12:02 PM.
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Old 10-14-2018, 12:33 PM
  #36  
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Originally Posted by jost6453 View Post


I agree .... when two simple modifications are made. NPP is perfect when a mild-to-wild switch is installed and 'clips' are added to the butterflies so they can't close completely. I went with a dead pedal foot switch. It's a perfect and simple solution. I also installed speed nut clips on the butterflies so they are proped open approx 1/8" when in the 'mild' position. It provides the sweetest tone with NO highway drone.
What’s perfect for some is definitely not perfect for all. The NPP tip clutter and small tip size is not a good look.
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Old 10-14-2018, 03:14 PM
  #37  
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Originally Posted by saplumr View Post


What’s perfect for some is definitely not perfect for all. The NPP tip clutter and small tip size is not a good look.
I added clips to the butterflies .... not the linkage. But covered it all up with the enhancer plate.

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Old 10-15-2018, 05:42 AM
  #38  
corvette312
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Where can someone buy the NPP system?
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Old 10-15-2018, 09:04 AM
  #39  
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Default Just right.

PFADT Tri Y's with Borla Stingers are the right mix for me!
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Old 10-15-2018, 11:55 AM
  #40  
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Originally Posted by corvette312 View Post
Where can someone buy the NPP system?
watch the "parts for sale" section on this forum, there are usually a couple. Some are complete, front to rear, some are just the muffs, which is all most people want. Also, I see them on craigslist sometimes, and ebay, thought the ones on ebay are usually way high priced.
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