11-12-2017, 05:38 PM | #1 |
Drives: 2000 Camaro SS, 2018 ZL1 M6 Join Date: Sep 2017
Location: Oregon
Posts: 18
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Dual Mode Exhaust Deleted For 2018 ZL1?
Hey guys, I am about to pull the trigger on factory order for a 2018 ZL1 Convertible. When the salesman sent over the full order sheet for me to confirm the options and pricing, I saw no NPP option code for the Dual Performance Exhaust. I know this was there on the 2017s for sure as evident by some window stickers online (at least for the ZL1 coupe, unsure if 2017 convertibles came with NPP?).
In searching through the Chevy.com build your own, it also doesn't show up as 2018 standard equipment (nor optional), and mentions nothing at all about the exhaust in the Mechanical Summary section. Can anyone with a 2018 non-1LE coupe or convertible confirm that NPP is gone? Also, I'm in California so am hoping the YF5 option for California emissions isn't causing this NPP option to disappear. Thanks in advance! |
11-12-2017, 05:59 PM | #2 |
Drives: 2018 ZL1 A10 Nightfall Gray Join Date: Apr 2016
Location: Indiana
Posts: 104
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I think it is standard, It was included in my 18 ZL1.
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11-12-2017, 06:18 PM | #3 |
Drives: 2000 Camaro SS, 2018 ZL1 M6 Join Date: Sep 2017
Location: Oregon
Posts: 18
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Thanks for the quick reply - hoping this is just a miss on Chevy's end - have attached pics showing the 2017 vs 2018 build summaries to show what I am talking about
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11-12-2017, 07:22 PM | #4 |
Life's Short, Live Fast!
Drives: 2017 Hyper Blue A10 ZL1 Join Date: Nov 2016
Location: London, KY
Posts: 2,015
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The dual mode exhaust stating it uses vacuum pumps sounds like a 5th gen features list. I know my car has electric motorized valves and would think the convertible would have the same.
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11-12-2017, 09:01 PM | #5 |
Drives: 2017 2SS Join Date: Mar 2012
Location: Rolla, MO
Posts: 1,106
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On the Chevy Site, under "Build Your Own"
It lists dual mode exhaust as standard equipment on the ZL1
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11-12-2017, 09:35 PM | #6 |
#becauseracecar
Drives: 2016 SS Sedan, 2016 Camaro SS Join Date: May 2015
Location: Phoenix
Posts: 2,959
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It’s standard. No need to worry.
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11-13-2017, 08:26 PM | #7 |
Drives: 2000 Camaro SS, 2018 ZL1 M6 Join Date: Sep 2017
Location: Oregon
Posts: 18
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Thanks guys - good catch on the wording on "vacuum pump" - now makes me pretty sure Chevy screwed it up on the 2017 description and corrected it on the 2018.
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11-13-2017, 08:43 PM | #8 |
Thank you Al Oppenheiser!
Drives: Red Hot A10 ZL1 Convertible Join Date: Jun 2017
Location: Sarasota, FL
Posts: 4,978
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one more whack for the horse...
NPP is standard, and electrically actuated.
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11-13-2017, 09:52 PM | #9 |
I used to be Dragoneye...
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It's a standard feature of the car. If they left it off any ordering/build literature, it's probably just a typo.
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11-14-2017, 05:18 PM | #10 |
Drives: 2018 ZL1 in sweet hyper blue Join Date: Oct 2017
Location: North Carolina
Posts: 61
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I have a 2018 coupe and it definitely has dual mode exhaust.
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11-14-2017, 05:35 PM | #11 |
Drives: Fast Join Date: Mar 2015
Location: Michigan
Posts: 3,696
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Technically, isn't it 5 mode exhaust? "Penta-mode" lol.
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11-14-2017, 05:53 PM | #12 |
Drives: 17 2SS, 8L90, Cam, Heads, E85 Join Date: Dec 2016
Location: US
Posts: 1,204
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Whats up the with vaccum statement? I thought the NPP was controlled by a motor that sends a PWM control?
Also, how is the DOD/AFM control done? Is'nt it just vaccum controlled? I've never actually seen it, and I'm just wondering how it quiets everything down so much in V4? |
11-15-2017, 09:05 AM | #13 | |
I used to be Dragoneye...
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Quote:
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11-15-2017, 12:46 PM | #14 |
Sellin Chevy's since '06
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Mine does too! 5th Gens were vacuum actuated, 6th gens are electronically controlled
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