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I know that the C7 has the option of the Engine Management where the NPP can be set to Track Mode, so they are open, but are they truly open completely all the time? Do I need to have the driving mode in track. It seems that while cruising they do not sound as loud. Also, why if they do remain open why does anyone want to pull the fuse or spend the money on the Mild to Wild add on?
I have my Engine Mgmt set to Track so to have open NPP. I have mode **** set to 'Touring'. My NPP shuts under normal driving between 30-40mph, I believe when I hit 5th gear(A8). I never drive in sport or track mode.
Pulling the fuse is the only way to keep it wide open,Always.Now witch fuse....Hmmm https://www.corvetteforum.com/forums...hich-fuse.html
And a Range devise will keep it on a 8cylinder always with a Automatic.Who wants to hear that 4 banger changing on a wide open NPP
I know that the C7 has the option of the Engine Management where the NPP can be set to Track Mode, so they are open, but are they truly open completely all the time? Do I need to have the driving mode in track. It seems that while cruising they do not sound as loud. Also, why if they do remain open why does anyone want to pull the fuse or spend the money on the Mild to Wild add on?
Yes, it will stay open all of the time except for two things and they depend on your transmission type.
If you have an M7 with Engine Sound Management set in Track with Drive Mode Set in Tour, Sport, or Track the Exhaust will stay open all of the time except when you are driving below 1500 rpm in 5th gear (somewhere around 39 mph). This is how my car behaves. Sometimes the exhaust sound isn't all that loud if you are driving with a light load and light throttle but it is still open. However, if you place the Drive Mode in Eco the valves will close every time the engine switches to 4-cylinder mode. One way to tell is to set Drive Mode to Eco and you will hear the exhaust get quieter every time the engine switches to 4-cylinder mode. This is very obvious in 4th gear when driving around town. Eco mode doesn't switch to 4-cylinder operation in the First, Second, or Third gears. When I am running with the Cruise set at 80 mph with the transmission in 6th or 7th gears the exhaust is so loud (louder in 7th) I have to switch it to Stealth mode so I can hear the radio.
If you have an A8 the Drive Mode is basically Eco mode all of the time unless you put the transmission in manual mode. So the valves will close in whatever gears 4 cylinder mode can activate. Switching to manual mode leaves them open all the time. There may be some rpm limits like 1500 rpm in 5th gear with the M7 but I don't know since I don't have an A8.
This was something I didn't care for in my previous Stingray Z51. Even though it had NPP (in Track Mode), it seemed to "quiet back down" soon after start up and/or a drive. It sounded very "tame". Most will swear on the Range device, pulling the fuse, or the mild to wild. I did all 3 and there wasn't much of a difference with any. If you want sound you'll probably have to opt for changing out the exhaust or going with an x-pipe and/or headers. I'd listen to some sound clips on youtube.
In comparison, when my Z06 was delivered, they fired it up and I immediately noticed the difference in sound. The first thing I yelled was... "Oh my God, it sounds like the other one!" I said this because the Z sounds almost exactly like my modified C5 which has full exhaust mods: B&B Bullets, x-pipe and high flow cats. I do notice the sound "settles" a bit into a deep rumble but still sounds great. I leave the Z in Track mode with the top down, and I'm a happy camper. No need to touch the exhaust on this beast.
I have a 2014 supercharged A6 with AWE exhaust which takes away NPP but out curiosity I always wondered if ECO mode is chosen does it still works and goes to 4-cylinder mode with my set-up?
Originally Posted by Bill Dearborn
Yes, it will stay open all of the time except for two things and they depend on your transmission type.
If you have an M7 with Engine Sound Management set in Track with Drive Mode Set in Tour, Sport, or Track the Exhaust will stay open all of the time except when you are driving below 1500 rpm in 5th gear (somewhere around 39 mph). This is how my car behaves. Sometimes the exhaust sound isn't all that loud if you are driving with a light load and light throttle but it is still open. However, if you place the Drive Mode in Eco the valves will close every time the engine switches to 4-cylinder mode. One way to tell is to set Drive Mode to Eco and you will hear the exhaust get quieter every time the engine switches to 4-cylinder mode. This is very obvious in 4th gear when driving around town. Eco mode doesn't switch to 4-cylinder operation in the First, Second, or Third gears. When I am running with the Cruise set at 80 mph with the transmission in 6th or 7th gears the exhaust is so loud (louder in 7th) I have to switch it to Stealth mode so I can hear the radio.
If you have an A8 the Drive Mode is basically Eco mode all of the time unless you put the transmission in manual mode. So the valves will close in whatever gears 4 cylinder mode can activate. Switching to manual mode leaves them open all the time. There may be some rpm limits like 1500 rpm in 5th gear with the M7 but I don't know since I don't have an A8.
I have a 2014 supercharged A6 with AWE exhaust which takes away NPP but out curiosity I always wondered if ECO mode is chosen does it still works and goes to 4-cylinder mode with my set-up?
The easiest way to check is to try it. Sometimes they will tune AFM off.
This was something I didn't care for in my previous Stingray Z51. Even though it had NPP (in Track Mode), it seemed to "quiet back down" soon after start up and/or a drive. It sounded very "tame". Most will swear on the Range device, pulling the fuse, or the mild to wild. I did all 3 and there wasn't much of a difference with any. If you want sound you'll probably have to opt for changing out the exhaust or going with an x-pipe and/or headers. I'd listen to some sound clips on youtube.
In comparison, when my Z06 was delivered, they fired it up and I immediately noticed the difference in sound. The first thing I yelled was... "Oh my God, it sounds like the other one!" I said this because the Z sounds almost exactly like my modified C5 which has full exhaust mods: B&B Bullets, x-pipe and high flow cats. I do notice the sound "settles" a bit into a deep rumble but still sounds great. I leave the Z in Track mode with the top down, and I'm a happy camper. No need to touch the exhaust on this beast.
Good Luck and keep us updated.
You have the most spot on post regarding this situation and I have been saying it for a long time. I have a 2019 GS M7 and have always complained here that no matter what I do, pull the fuse, drive in track, etc...it always sounds lame. Two other things I agree with it, your Z sounds like a different animal, and when I had my C6 GS with NPP that sounded like a different animal.
Its been a few years since I updated my harness to a 2016 and I never used A4 before that but when I take road trips I wondered if the V4 eco mode worked. I just went to the website where I bought the harness and it seems that eco mode works based on the statement "retain full control of the drive modes via the Multi Selection Rotary **** on the center console". Since you get to ECO mode via the console **** and it states you retain full control I still wonder how do you verify or know that when you switch to ECO how can you tell and if I didn't have a supercharger and aftermarket exhaust how could tell?2014 CORVETTE Z51 OWNERS WITH MCR AND NPP EXHAUST PLEASE NOTE
I also note that 2014 didn't have ApplePlay/DroidPlay, so I did retrofit so that I now have Apple CarPlay with a 2016 components designed to retain all factory features such as the Performance Data Recorder ( PDR ), Drive Mode Selections / Magnetic Ride Control with PTM, Performance Exhaust / Engine Sound Management ( NPP ), Rear Camera parking grid lines, HD Radio, Pandora etc.
Due to the difference in the Electronic Suspension Control Module’s between 2014 to 2015 Model Years; you will loose the onscreen touch control of the Suspension and Sound Management. You will, however, retain full control of the drive modes via the Multi Selection Rotary **** on the center console. The Exhaust Sound will also continue to change modes with the **** selections as well.
Also, I will go through this thread as it as grown since I did the conversion and might find the answer here.
Love the sound of my NPP exhaust on my 2019 Z06 so much that I pulled the fuse to make sure I am loving it 100% of the time, top down, open NPP wow all good.
Love the sound of my NPP exhaust on my 2019 Z06 so much that I pulled the fuse to make sure I am loving it 100% of the time, top down, open NPP wow all good.
Only difference is mine is a Grand Sport! I just popped fuse #87 (2019 only) and saved myself $$$ from changing the exhaust system at all. Sounds better than some "exotics" I've heard.
I also have a GS2019, are there any issues or concerns with pulling the Fuse out ?
what is the downside to this?
If nothing why would people buy the range device?
I also have a GS2019, are there any issues or concerns with pulling the Fuse out ?
what is the downside to this?
If nothing why would people buy the range device?
The Range module keeps the engine in V8 mode all the time. This fuse has nothing to do with that, only the opening and closing of the NPP exhaust.
I also have a GS2019, are there any issues or concerns with pulling the Fuse out ?
what is the downside to this?
If nothing why would people buy the range device?
No downside to pulling the fuse and keeping those valves open that I've seen in CF. However, you may **** yourself with excitement at cold start up!
Maybe put it back in every couple of years to keep them working.
FWIW, The "range" device is completely different and, I think is related to the response/feel of the gas pedal itself and V8 mode. M7 guy here so please verify.
You can tune the CCM in these cars to have the NPP exhaust do whatever you want. I have mine tuned tuned to always be 100% open in Track and open a little more often in Sport vs stock settings. Then Tour is set to quite mode unless I am at WOT past XXXX rpm. This requires HP Tuners and licensing the CCM which I think is 2 credits ($99).
No downside to pulling the fuse and keeping those valves open that I've seen in CF. However, you may **** yourself with excitement at cold start up!
Maybe put it back in every couple of years to keep them working.
FWIW, The "range" device is completely different and, I think is related to the response/feel of the gas pedal itself and V8 mode. M7 guy here so please verify.
Range device just keeps the car in V8 mode all the time. I think M7 doesn’t go to V4 unless in eco mode. The A6 and A8 will go V4 unless in manual mode (paddle shift). The V4 mode sounds bad when you have the NPP open so staying in V8 is ideal for noise (and A8 issues I’ve heard).
Range device just keeps the car in V8 mode all the time. I think M7 doesn’t go to V4 unless in eco mode. The A6 and A8 will go V4 unless in manual mode (paddle shift). The V4 mode sounds bad when you have the NPP open so staying in V8 is ideal for noise (and A8 issues I’ve heard).
NPP and Engine Management
