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Old 02-12-2019, 05:19 PM   #113
70chevelleSS
 
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Quote:
Originally Posted by Camaro 79 View Post
When you say Valves closed, do you mean when the exhaust is in Stealth mode? Or when the car is in Touring/Sport/Track below a certain RPM range?


I mean in touring mode, although the sound should be the same in touring vs sport when cruising. In track mode below ~1800 rpm it drones


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Old 02-12-2019, 05:20 PM   #114
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Originally Posted by MAGAUSA View Post
Do you have a manual or auto? If the sound isnít to my liking I may through on the borla resonators. The borla lines right up to stock so Iím not expecting figment issues


Mine is an a8. Donít get me wrong it sounds great but it drones in track mode below ~1800 rpm.


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Old 02-12-2019, 06:46 PM   #115
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Originally Posted by 70chevelleSS View Post
Mine is an a8. Donít get me wrong it sounds great but it drones in track mode below ~1800 rpm.


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Cool, thanks! I'm in a manual. I'm only below 1,800 for as much time as it takes to go from zero mph. I don't think I'm ever at that rpm while driving.
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Old 02-13-2019, 09:07 AM   #116
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Originally Posted by 70chevelleSS View Post
I mean in touring mode, although the sound should be the same in touring vs sport when cruising. In track mode below ~1800 rpm it drones


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Awesome, that's helpful. I just want to make sure that when I'm going on a long drive at highway speeds I can keep it in sport or move it into touring and not deal with any drone.
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Old 02-13-2019, 10:00 AM   #117
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Shouldn't have any drone with the valves closed. That is what I liked the best about this exhaust aside from the deep tone. It has the biggest variance going from closed to open. Most of the other NPP exhausts are loud in both modes.
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Old 02-17-2019, 04:00 PM   #118
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Shouldn't have any drone with the valves closed. That is what I liked the best about this exhaust aside from the deep tone. It has the biggest variance going from closed to open. Most of the other NPP exhausts are loud in both modes.
This is why I went with this exhaust. With the stock NPP and Borla midpipe, for me valves closed only makes sense on cold or other starts in the neighborhood. But closed was too quiet to ever be in Tour or Sport while driving. I wanted a functioning after market NPP that makes a difference with the valves but also increases sound. I’ll have it installed tomorrow morning. Curious how the Borla will mate to this and what may be required.
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Old Yesterday, 10:44 PM   #119
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I have this installed, mated to the Borla midpipe (secondary "cats" deleted). Previously the Borla midpipe was welded to the stock pipes leading into the stock muffler suitcase. For awhile this satisfied me, with the increased sound that the Borla provided. In the end it wasn't enough and I wanted something more aggressive with the functionality of the valves. I couldn't see any system that actually made a difference with the valves other than this one.



As far as fitment, the shop had to create a transition piece since the Flowmaster and Borla pieces were essentially the same size. It was no problem at all and it's all buttoned up.


I really like the black painted system. It tucks underneath and doesn't appear hanging out like a big bling set of wannabe balls. YMMV. I don't like how the the outlets on the exhaust are different, but I may get used to it. The Delta 40s (the quieter ones on the inside) are narrower in inner circumference, but then have an effect to them by having more material inside vs the outlaws. They are the same outer circumference. I'll be happy when they are covered in carbon. Poor me right?


They sound fricking amazing. I finally have an NPP that is useful for my purposes. The stock was rental car quiet with valves closed. And the passenger side rattled like a cheap tin can (epoxied under warranty, then I just gave up). Now I have a mildly, ever so mildly, aggressive exhaust with the valves closed and an absolute blast when the valves are open. In both modes, the sound is deeper, with valves closed just ever so sweet and with valves open, just like an American V8 should sound. I drive a manual and it does get a little boomy around 1,800 with the valves open, but with a manual it works just great for what I want.



I now find myself using the NPP more. I used to be in track mode all of the time. Now I'm able to use tour and sport mode more than ever, and stealth before I turn it off.
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Old Yesterday, 10:49 PM   #120
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Quote:
Originally Posted by MAGAUSA View Post
I have this installed, mated to the Borla midpipe (secondary "cats" deleted). Previously the Borla midpipe was welded to the stock pipes leading into the stock muffler suitcase. For awhile this satisfied me, with the increased sound that the Borla provided. In the end it wasn't enough and I wanted something more aggressive with the functionality of the valves. I couldn't see any system that actually made a difference with the valves other than this one.



As far as fitment, the shop had to create a transition piece since the Flowmaster and Borla pieces were essentially the same size. It was no problem at all and it's all buttoned up.


I really like the black painted system. It tucks underneath and doesn't appear hanging out like a big bling set of wannabe balls. YMMV. I don't like how the the outlets on the exhaust are different, but I may get used to it. The Delta 40s (the quieter ones on the inside) are narrower in inner circumference, but then have an effect to them by having more material inside vs the outlaws. They are the same outer circumference. I'll be happy when they are covered in carbon. Poor me right?


They sound fricking amazing. I finally have an NPP that is useful for my purposes. The stock was rental car quiet with valves closed. And the passenger side rattled like a cheap tin can (epoxied under warranty, then I just gave up). Now I have a mildly, ever so mildly, aggressive exhaust with the valves closed and an absolute blast when the valves are open. In both modes, the sound is deeper, with valves closed just ever so sweet and with valves open, just like an American V8 should sound. I drive a manual and it does get a little boomy around 1,800 with the valves open, but with a manual it works just great for what I want.



I now find myself using the NPP more. I used to be in track mode all of the time. Now I'm able to use tour and sport mode more than ever, and stealth before I turn it off.


Sweet! Iím considering buying flowmaster a scavenger x pipe for mine, to go with the axle-back I already have. Not sure if it would be enough of a difference to be worth it though


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Old Yesterday, 10:52 PM   #121
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Originally Posted by 70chevelleSS View Post
Sweet! Iím considering buying flowmaster a scavenger x pipe for mine, to go with the axle-back I already have. Not sure if it would be enough of a difference to be worth it though


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Just do it. Why not?
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