2011 LS3 M6 w/ NPP
Thread Starter
Team Owner
Joined: Sep 2005
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
2011 LS3 M6 w/ NPP
So here is the question. How do I keep the NPP from opening once the rps exceed the 3500 rpm threshold ? Disconnect the vacuum lines ?
Instructor
Joined: Apr 2007
Posts: 154
Likes: 0
From: South Louisiana/Mississippi
You might try running a piece of wire from the exhaust hanger to the npp actuator to hold them in the closed position. I would then unplug the vacuum lines so as you do not do any harm to the vacuum module. Sounds back woods but may accomplish what your trying to acheive.
Good luck.
Good luck.
Safety Car
Joined: Apr 2004
Posts: 3,738
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From: Austin, Texas
Thread Starter
Team Owner
Joined: Sep 2005
Posts: 29,113
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Argggggg ......... That's the problem. The tips on the base look anemic. 
It's vacuum that keeps them closed which is why they are open on start up. Sure wish GM had set things up the other way. 
Race Director
Joined: Mar 2007
Posts: 11,331
Likes: 18
From: Missouri City Texas
You could also find yourself a cheap Borla Touring catback. VERY docile and has nice, large tips.
You could sell your NPP setup and pay for it, no problem.
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Thread Starter
Team Owner
Joined: Sep 2005
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
The issue is the sudden burst of noise when my s/o is with me and I go to pass on our two lane back roads. She won't say a word till that frigg'n exhaust opens up. 
I hate burned toast ........
Thread Starter
Team Owner
Joined: Sep 2005
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Funny you mention that .................. I've been thinking along those lines. I had Borla's on the '07 and loved them.
Pro
Joined: Aug 2001
Posts: 715
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From: Philly Area PA
To answer the why questions, I live near a major city and it's sometimes nice not to have every officer within a 5 block radius hear it when the rpms get up there.
Thread Starter
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From: Big Bend Country, TX
St. Jude Donor '06-'07-'08-'09-'10-'11-'12-'13-'14-'15- '16-'17-‘18-‘19-'20-'21
NCM Lifetime Member
Ben at SunsetOrangeCreations made me an exhaust commander that had a full closed mode. You might get in touch with him-- works well through a homelink button on my visor.
To answer the why questions, I live near a major city and it's sometimes nice not to have every officer within a 5 block radius hear it when the rpms get up there.
To answer the why questions, I live near a major city and it's sometimes nice not to have every officer within a 5 block radius hear it when the rpms get up there.
Exactly why I want to override the damn thing ! I want it wide open on my terms ...............
