07-01-2013, 07:04 PM | #1 |
Drives: 2011 1SS/RS LS3 Join Date: Dec 2012
Location: Wilmington, DE
Posts: 319
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NPP exhaust question
We've ordered a C7 and decided to go with the NPP exhaust. The dealer told us that the flaps open at 3200rpms to aid with sound/performance. What we don't understand is if 3200rpms is the only way for the flaps to open, regardless of WOT or not? It seems to me that at WOT below 3200rpms, the flaps should be open? But do they stay closed to matter what until 3200rpms? If anyone can clear this up for me, It'd be greatly appreciated.
Thanks!
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CAI intake, apex scoop, Vmax ported TB, MGW short throw, BMR 1" springs and sways |
07-01-2013, 08:58 PM | #2 | |
Drives: C7 Z51 Mag Ride, ECC Join Date: Jun 2013
Location: Lafayette Hill, PA
Posts: 4
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07-02-2013, 02:26 PM | #3 |
Drives: 2010 Nissan Frontier Join Date: May 2013
Location: NC
Posts: 61
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What about getting an aftermarket exhaust? Wouldn't that work just as well, and save some money?
I'm asking because I am debating on adding the NPP or not, and I've already went over my budget on options |
07-02-2013, 03:27 PM | #4 |
Drives: 1969 Corvair, 2018 Camaro T4 RS Join Date: Mar 2009
Location: Detroit Metropolitan Area
Posts: 2,881
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Might work just as well, but not sure about cost unless one goes for something less than good. NPP with a wild to mild switch = best of all worlds. In my opinion.
Laborsmith |
07-02-2013, 05:31 PM | #5 | |
Drives: 2010 Nissan Frontier Join Date: May 2013
Location: NC
Posts: 61
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Quote:
Thanks, seeing as how I haven't moved from 3000 in a month, I'm pretty sure I can add this with no problem |
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07-02-2013, 06:42 PM | #6 |
Drives: 1969 Corvair, 2018 Camaro T4 RS Join Date: Mar 2009
Location: Detroit Metropolitan Area
Posts: 2,881
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When you get to 3000 you can ask to change your order and even if your dealer agrees your dealer has to make the request. 2500 and before changes are no problem, at 3000 possible but not always granted. 3100 and above, no, at least I have never heard of a change after getting to 3100.
The timing for the next pull is close: I am thinking July 9 at which point those at 3000 will likely be moved to 3100 the next day. All this to say, if you are serious about wanting the change you should plan on visiting your dealer tomorrow; I do believe Thursday will be too late. But I do not work for Chevy, so what do I know! Laborsmith |
07-02-2013, 07:47 PM | #7 |
Drives: 2010 Nissan Frontier Join Date: May 2013
Location: NC
Posts: 61
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Oh wow!!! I was not expecting that, I will probably just keep it the way it is then. Its already hard enough waiting, I don't want to do anything to make that any longer.
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07-02-2013, 08:43 PM | #8 | |
Drives: Blk Z51 NPP J6F Q7T Red Interior Join Date: Jun 2013
Location: Texan stationed in Hawaii
Posts: 135
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07-05-2013, 10:34 AM | #9 |
Drives: 18 Camaro ZL1 1LE (WILSON) Join Date: Jul 2009
Location: N.C.
Posts: 1,340
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I have a ZL1 with what I'm guessing is similar dual mode exhaust. You can go the cheap way and pull the fuse and the exhaust stays open all the time. You can add an after market system that has a key fob that allows you to open or close the dual exhaust any time you want (mild to wild or exhaust commander). I have the key fob and just leave it open all the time. The exhaust on my ZL1 opens to dual mode after a certain rpm or at WOT no matter the RPM. I would suspect the C7 will work similar but not sure. My wife has a C7 on order and we will probably put an exhaust commander on her car as well.
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07-05-2013, 06:17 PM | #10 |
N7 Spectre
Drives: 14 ATS Performance 3.6L AWD Join Date: Jul 2008
Location: Moosomin, Saskatchewan, Canada
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07-05-2013, 06:35 PM | #11 |
Drives: Blk Z51 NPP J6F Q7T Red Interior Join Date: Jun 2013
Location: Texan stationed in Hawaii
Posts: 135
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Thanks for showing that, exactly what I was talking about.
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03-18-2014, 04:53 PM | #12 |
Drives: 2014 Z51 3LT white, red int. Join Date: Nov 2013
Location: United States
Posts: 12
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03-18-2014, 08:30 PM | #13 | |
Drives: 2014 Stingray 2LT/Z51 Join Date: Feb 2010
Location: NAS PENSACOLA, FL
Posts: 2,375
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Quote:
Under settings/ driving modes you have two settings for NPP exhaust: 1-auto - follow the driving modes- meaning loud in sport and track. 2-off- loud all the time.
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03-19-2014, 02:15 AM | #14 |
Drives: 2014 Z51 Velocity Yellow Join Date: Jun 2013
Location: Tacoma WA
Posts: 170
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GB EB has it right. In settings the three exhaust sounds can be synched to tour, sport and track. Or "off" which opens all the valves all the time. You can see the back two valves in the two out board pipes. I run on off and love it.
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