01-25-2023, 01:30 PM | #1 |
Drives: 2021 2SS Join Date: Sep 2022
Location: Long Island, NY
Posts: 38
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DIY NPP Switch
I hated going through 4 different menu screens to change the exhaust level, wasn't ready to commit to pulling the fuse entirely, and didn't want to pay $100 for the Mild2Wild, so here is how I made a physical NPP switch for under $30.
I used this for the wire leads on it, cut and soldered in an ordinary inline fuse holder and about 10ft of 14 gauge wire going both ways. Used some sleeving I had laying around to keep it all looking nice. Replaced the NPP fuse with the harness and dremeled out a small slit in the fuse box to pass the wires then routed it around to the sound tube cap and drilled a hole in it for an easy firewall passthru. I ordered this bracket and switch and found a very convenient screw to mount it right next to the hood release. Zip tied away the cables, set the exhaust to stealth in the console and now I've got a physical exhaust switch! Proud of how clean this came out and how useful it is so I'd like to share with you all. |
01-25-2023, 02:53 PM | #2 |
Drives: 2023 ZL1 A10 Join Date: Nov 2021
Location: Az
Posts: 624
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Nice , good job , I have a M2W left over from my C7 , I haven't hooked up , I keep the exhaust on Track Mode , but fabricating and installing, is a good feeling . Again good job.. Happy Motoring
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2023 ZL1 A10 Shadow Gray Metallic
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01-25-2023, 03:51 PM | #3 |
Drives: 2021 2SS Join Date: Sep 2022
Location: Long Island, NY
Posts: 38
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Most of the time I’m open valves too, the stock exhaust really isn’t loud enough to be a nuisance. Once there are headers and a cat back system on the car, well that’s a different story.
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01-25-2023, 04:16 PM | #4 |
Drives: 2023 ZL1 A10 Join Date: Nov 2021
Location: Az
Posts: 624
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By the time, the oil temperature reaches op temp
I'm miles from home, then I get loud, never to old for loud . When I got my 1st car 17 yrs old, my dad said no cherry bombs, the new turbo muffler are ok. We're not loud enough, I did all the install while he was at work . When he herd it he knew it was me . Now at 67 I love the crackle an pops . Happy Motoring
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2023 ZL1 A10 Shadow Gray Metallic
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01-26-2023, 07:00 AM | #5 |
Drives: 2022 Camaro 2SS A10 Join Date: Jul 2022
Location: FL
Posts: 524
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Nice Job! So when the switch is off it is in 'Stealth' mode"- when the switch is on, it is in what mode? Sport or Track?
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2022 Camaro 2SS/ Whipple 3.0 / 2"Headers/ PRC LTX Heads/ Forged Internals/LT4 fueling/ DSX Aux/
DSX Flex Fuel/ Meth Injection/ Katech 112 TB/ RotoFab Big Gulp/ Corsa NPP/ Various exterior mods |
01-26-2023, 07:55 AM | #6 |
Damn bro, impressive!!!!!you should help GM make 7th gen camaro
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01-28-2023, 03:08 PM | #7 |
Drives: 2016 Camaro 2SS "Convertibobble" Join Date: Mar 2022
Location: Peoria, IL
Posts: 280
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Excellent! And I hear you: "4 screens to change the exhaust" is ridiculous -- not to mention that this appears to be the ONLY function that "drops out" if you remote-start the car before the DIC has fully booted up, or whatever the exact explanation is (covered many times here by people much smarter than I).
I neither care for the extra noise beyond Tour, nor do I automatically assume that the neighbors do, either. So I would love to have a physical switch between Stealth and Tour just like this. Ergo I will +1 the question already asked: when it is *not* in Stealth mode, what is the other setting? Does it just call up whatever the setting is in the DIC? That would be awesome. Make another one and sell it to me!
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'16 2SS Garnet Red ~24K
"Mods": GM wind deflector, home-made rear seat delete & platform, not-quite garnet red key fob cover (+10rwhp) '99 4Runner 367K '94 ST1100 146K |
02-08-2023, 12:49 AM | #8 |
Drives: 2021 2SS Join Date: Sep 2022
Location: Long Island, NY
Posts: 38
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When the switch is off, it is the same as pulling the fuse so the exhaust valves are always open. When on, it takes whatever mode is selected in the system, I keep it on stealth.
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02-08-2023, 12:53 AM | #9 | |
Drives: 2021 2SS Join Date: Sep 2022
Location: Long Island, NY
Posts: 38
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Quote:
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02-08-2023, 10:35 AM | #10 | |
Long hauler
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Quote:
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2022 2SS 1LE - Window Sticker - Cold Air Inductions Elite Carbon CAI
2016 1LT v6 - Totaled Happiness: Infinite |
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05-08-2024, 06:15 PM | #11 |
would you mind explaining how to connect the fuse holder to the 14gauge wire?
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2021 Camaro 2SS Summit White
Kooks 1-7/8 LTH with high flow cats, Corsa Extreme+ variable Catback Exhaust, Roto-Fab CAI, LT5 95mm TB, GPI Ported-LT2 IM, Lethal Garage Flex Fuel Sensor, Mishimoto catch can. |
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