02-12-2019, 04:19 PM | #113 | |
Drives: 2017 Camaro SS 1970 chevelle SS Join Date: Oct 2016
Location: Florida
Posts: 231
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Quote:
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 Sent from my iPhone using Tapatalk
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2017 camaro SS A8
FBO With all porting and tuning done by PRAY |
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02-12-2019, 04:20 PM | #114 | |
Drives: 2017 Camaro SS 1970 chevelle SS Join Date: Oct 2016
Location: Florida
Posts: 231
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Quote:
Mine is an a8. Don’t get me wrong it sounds great but it drones in track mode below ~1800 rpm. Sent from my iPhone using Tapatalk
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2017 camaro SS A8
FBO With all porting and tuning done by PRAY |
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02-12-2019, 05:46 PM | #115 | |
Drives: 2017 Hyper Blue 1LE Join Date: Dec 2016
Location: Tampa
Posts: 579
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Quote:
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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02-13-2019, 08:07 AM | #116 | |
Drives: 2018 Camaro SS Join Date: Feb 2016
Location: DMV
Posts: 129
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Quote:
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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Current - 2018 Camaro 1SS with MRC, 1LE Suspension, NPP Exaust, 6 Speed.
Past - 2016 Ford Mustang GT Performance Pack 2015 Camaro SS 2010 Ford Mustang GT |
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02-13-2019, 09:00 AM | #117 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,763
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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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2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
02-17-2019, 03:00 PM | #118 |
Drives: 2017 Hyper Blue 1LE Join Date: Dec 2016
Location: Tampa
Posts: 579
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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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02-19-2019, 09:44 PM | #119 |
Drives: 2017 Hyper Blue 1LE Join Date: Dec 2016
Location: Tampa
Posts: 579
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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. |
02-19-2019, 09:49 PM | #120 | |
Drives: 2017 Camaro SS 1970 chevelle SS Join Date: Oct 2016
Location: Florida
Posts: 231
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Quote:
Sweet! I’m 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 Sent from my iPhone using Tapatalk
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2017 camaro SS A8
FBO With all porting and tuning done by PRAY |
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02-19-2019, 09:52 PM | #121 |
Drives: 2017 Hyper Blue 1LE Join Date: Dec 2016
Location: Tampa
Posts: 579
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03-20-2019, 01:50 PM | #122 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,763
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Does anybody else notice a excess amount if "hissing" when the valves are closed? It's almost like the valves don't close all the way and they leak.
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
03-20-2019, 02:13 PM | #123 |
Drives: 2016 SS w/2SS A8 Blue Velvet Join Date: Dec 2009
Location: 39.793153,-86.238223
Posts: 3,678
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No and I’ve had mine since Spring of 2017. Love it, no drone and tone is deep!
Sent from my iPhone using Tapatalk
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Never grow up, it's a trap!
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03-20-2019, 02:29 PM | #124 |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,763
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Yeah I think mine is defective. I can see gaps around where the valves are suppose to seal to the pipe. Mine has some drone with the valves open which is no biggie.
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
03-20-2019, 02:34 PM | #125 | |
Drives: 2017 Camaro SS 1970 chevelle SS Join Date: Oct 2016
Location: Florida
Posts: 231
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Quote:
Mine also has drone when the valves are open. But I don’t mind bc I just shut them when cruising and there is no drone. I have tossed around the idea of buying the flowmaster x pipe, I’m curious if it would make the drone better or worse or have any effect at all. But no, I don’t have any whistling noises with the valves closed. My valves also appear to close fully Sent from my iPhone using Tapatalk
__________________
2017 camaro SS A8
FBO With all porting and tuning done by PRAY |
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03-20-2019, 03:40 PM | #126 | |
Drives: 2016 1SS NFG A8 Join Date: Aug 2017
Location: 46804
Posts: 6,763
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Quote:
__________________
2016 NFG 1SS A8
Options-2SS Leather/NPP Perf. mods-Whipple 2.9/Fuel System/Flex Fuel/103mm TB/Rotofab Big Gulp/Cat Deletes/Corsa NPP Per. times- 10.5 @ 137 w/ 1.8 60ft Full weight on 20's 1200DA |
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american, axle, dual, flowmaster, npp |
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