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10-04-2013, 10:08 PM
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#1 |
Drives: 2011 Audi Q7 Join Date: Mar 2013
Location: Elk Grove, CA
Posts: 1,084
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Cheap NPP sound trick
For those that have retrofitted NPP exhaust (or have it and dont want to buy a mild2wild) on their Camaros I figured out a cheap way to get a clean sound. I bought a couple of rubber caps for the vacuum lines from OReilly s. I then pushed the actuators all the way in and put tue cap on while holding it in. When I let go it leaves the valves open about 1/4 of an inch. It gives a really nice balance tone.
Just throwing it out there as an alternative to using NPP in a box. Sent from my SCH-I545 using Tapatalk 4 |
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10-04-2013, 10:39 PM
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#2 |
   Drives: 2013 Camaro 2SS/RS BRM LS3 Join Date: Jan 2013
Location: Hawaii
Posts: 1,174
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Just pull the fuse
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10-04-2013, 11:57 PM
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#3 |
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2015 SS 6M
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10-05-2013, 04:09 AM
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#4 |
 
Drives: 1973 z28 Rs , 2012 SS/Rs Blk/Blk M6 Join Date: Oct 2009
Location: Laguna
Posts: 197
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No fuse on retrofit
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10-05-2013, 06:22 AM
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#5 |
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Stovebolt BluFlame 6
Drives: '12 2LT/RS, IBM; '20 Traverse Prem Join Date: Oct 2011
Location: Wherever!
Posts: 893
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I like this approach. I've been considering the NPP as a retrofit and everyone was saying it was complicated due to the vacuum and electronics. This makes it simple--install, cap the vacuum, and forget the electronics. Let it remain in a partial open mode. Thanks OP.
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10-05-2013, 01:58 PM
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#6 |
 
Drives: 2013 Camaro 1SS 6-speed VR Join Date: Mar 2008
Location: Somewhere nice and cool
Posts: 303
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Thanks for the info. Never really thought about doing that. I'm having a little annoying drone in the cabin and hoping this may reduce it a little. I also have a retrofitted NPP exhaust w/o vacuum and fuses.
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2013 Victory Red 1SS 6-speed w/ black stripes ordered 8/15/12
Delivered 10/2/2012! Corsa ZL1 catback exhaust, Black CAI intake with scoop and washer bottle relocation |
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10-05-2013, 02:38 PM
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#7 |
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Drives: 2011 Audi Q7 Join Date: Mar 2013
Location: Elk Grove, CA
Posts: 1,084
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It doesnt completely remove all the drone but it is much more bearable. I havent done any extended testing but was pleasantly surprised to see that capping the vacuum with the valve closed and it stays partially closed. The vette guys buy things to have this same effect but my way costs less than a buck
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10-05-2013, 05:35 PM
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#8 |
       
Drives: 2013 SS Join Date: May 2013
Location: DFW
Posts: 4,102
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sound clip????????
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10-05-2013, 06:02 PM
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#9 |
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Drives: 2013 Camaro 1SS 6-speed VR Join Date: Mar 2008
Location: Somewhere nice and cool
Posts: 303
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Sound clip would be nice. Just recorded my internal cabin noise level and on the highway it's reading around 82-90ish decibels inside. No radio and in 6th gear. Agh!
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2013 Victory Red 1SS 6-speed w/ black stripes ordered 8/15/12
Delivered 10/2/2012! Corsa ZL1 catback exhaust, Black CAI intake with scoop and washer bottle relocation |
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10-05-2013, 10:15 PM
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#10 |
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Drives: 2011 Audi Q7 Join Date: Mar 2013
Location: Elk Grove, CA
Posts: 1,084
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I can do that possibly monday. Havent had a chance to drive it this weekend.
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10-06-2013, 02:10 PM
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#11 |
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Drives: 2011 Audi Q7 Join Date: Mar 2013
Location: Elk Grove, CA
Posts: 1,084
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As much as I wanted this to work I have to report that it does not work. I checked the valves this morning and they don't stay closed...
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10-06-2013, 04:28 PM
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#12 | |
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Drives: 2013 Camaro 1SS 6-speed VR Join Date: Mar 2008
Location: Somewhere nice and cool
Posts: 303
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Quote:
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2013 Victory Red 1SS 6-speed w/ black stripes ordered 8/15/12
Delivered 10/2/2012! Corsa ZL1 catback exhaust, Black CAI intake with scoop and washer bottle relocation |
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10-06-2013, 07:57 PM
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#13 |
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Drives: 2011 Audi Q7 Join Date: Mar 2013
Location: Elk Grove, CA
Posts: 1,084
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I have a NPP in a box system on the way from Sunset Orange. It looks like the most complete kit available.
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10-08-2013, 09:09 AM
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#14 |
 
Drives: 2010 2SS 6 Speed Join Date: Sep 2013
Location: GA
Posts: 50
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The Mild2Wild is the original and best. When you purchase the Mild2Wild they back up their product! If you need help or have any issues they have always been top notch.
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