NPP different tones and valve position

adman98 · 08-09-2021, 02:47 PM

Hey guys, I have a 1ss with NPP and I think it's messed up, but the dealer thinks I'm crazy. I bought it in April and showed the guys and we all could hear a tone difference from sport to track mode. Sport crackled more. Anyway a couple weeks ago the valve got stuck on tour and wouldn't move when put into sport or track. So I used the dash screen to chsnge it to sport and it opened up. The switch then started working again. However, I noticed that there was no tone difference when I switched from sport to track mode.

So I'm asking you guys if any of you ever noticed a tone difference from sport to track with NPP?

Thanks

Spaceme1117 · 08-09-2021, 03:05 PM

I notice a significant difference going from Tour to Sport but only a small difference from Sport to Track at idle.

I notice a significant difference between Sport and Track when driving however; Track keeps the valves open a lot more of the time.

adman98 · 08-09-2021, 03:57 PM

Thank you. I totally agree the difference from sport to track is small but noticable. I'm so furious, because not only did they not believe me nor fix the issue, I think they ragged my car. It had way more miles and way more gas used then the piece of paper saying they drove from 3053 to 3057. Plus as I drove away I noticed the miles were at 3055. I looked again at the paper and saw the numbers were ☝️. But I already left. My e brake isn't grabbing like it used to. I KNOW MY CAR. So I can tell someone ragged it. I guess all I can do is give a horrid review everywhere I can. Thanks for your input

bjbonentte · 08-11-2021, 07:55 PM

There is a little difference the way the valves are programed for sport and track. I used HP tuners to change mine. I made sport the same as track except for 6th gear. I kept the valves closed in 6th for highway drone. I also changed tour mode to keep valves closed at startup. Helps keep the neighbors happy with no cats.

arpad_m · 08-11-2021, 10:18 PM

Quote:

Originally Posted by bjbonentte

There is a little difference the way the valves are programed for sport and track. I used HP tuners to change mine. I made sport the same as track except for 6th gear. I kept the valves closed in 6th for highway drone. I also changed tour mode to keep valves closed at startup. Helps keep the neighbors happy with no cats.

I swear I first thought your neighbors were feline deprived, then realized what you were talking about

adman98 · 08-13-2021, 04:50 PM

Quote:

Originally Posted by bjbonentte

There is a little difference the way the valves are programed for sport and track. I used HP tuners to change mine. I made sport the same as track except for 6th gear. I kept the valves closed in 6th for highway drone. I also changed tour mode to keep valves closed at startup. Helps keep the neighbors happy with no cats.

Thanks for your help. I'll have to wait a little bit before getting an HP tuner and tuning my car as I don't want to mess with the warranty just yet.

Quote:

Originally Posted by arpad_m

I swear I first thought your neighbors were feline deprived, then realized what you were talking about

That was funny... At first glance, it reads like that..lol

08-09-2021, 02:47 PM	#1
adman98 Drives: 2021 Camaro 1SS M6 Join Date: Mar 2021 Location: North Carolina Posts: 68	NPP different tones and valve position Hey guys, I have a 1ss with NPP and I think it's messed up, but the dealer thinks I'm crazy. I bought it in April and showed the guys and we all could hear a tone difference from sport to track mode. Sport crackled more. Anyway a couple weeks ago the valve got stuck on tour and wouldn't move when put into sport or track. So I used the dash screen to chsnge it to sport and it opened up. The switch then started working again. However, I noticed that there was no tone difference when I switched from sport to track mode. So I'm asking you guys if any of you ever noticed a tone difference from sport to track with NPP? Thanks __________________ 2021 Camaro RS 2.0Turbo SOLD

08-09-2021, 03:57 PM	#3
adman98 Drives: 2021 Camaro 1SS M6 Join Date: Mar 2021 Location: North Carolina Posts: 68	Thank you. I totally agree the difference from sport to track is small but noticable. I'm so furious, because not only did they not believe me nor fix the issue, I think they ragged my car. It had way more miles and way more gas used then the piece of paper saying they drove from 3053 to 3057. Plus as I drove away I noticed the miles were at 3055. I looked again at the paper and saw the numbers were ☝️. But I already left. My e brake isn't grabbing like it used to. I KNOW MY CAR. So I can tell someone ragged it. I guess all I can do is give a horrid review everywhere I can. Thanks for your input __________________ 2021 Camaro RS 2.0Turbo SOLD

08-09-2021, 03:05 PM	#2
Spaceme1117 Drives: 2017 Camaro SS, 2011 Corvette GS Join Date: Feb 2019 Location: Erlanger, Kentucky 41018 Posts: 815	I notice a significant difference going from Tour to Sport but only a small difference from Sport to Track at idle. I notice a significant difference between Sport and Track when driving however; Track keeps the valves open a lot more of the time.

08-11-2021, 07:55 PM	#4
bjbonentte Drives: 2019 Chevrolet Camaro Join Date: Mar 2020 Location: Lantana, TX Posts: 77	There is a little difference the way the valves are programed for sport and track. I used HP tuners to change mine. I made sport the same as track except for 6th gear. I kept the valves closed in 6th for highway drone. I also changed tour mode to keep valves closed at startup. Helps keep the neighbors happy with no cats.

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