Exhaust Question
Burning Brakes
Joined: Aug 2008
Posts: 802
Likes: 6
From: Oro Valley AZ
Burning Brakes
Joined: Aug 2008
Posts: 802
Likes: 6
From: Oro Valley AZ
NPP in a Box is wired for the butterflies to open in the closed positions to accommodate the wife.
Instructor
Joined: May 2008
Posts: 239
Likes: 4
Depends on what you want to do. With the factory setup, the computer controls when the vacuum is applied based on RPM. This is like a "smart" version of the musclecar era Cowl Induction hood flapper in that under WOT, the flapper is open. This is what I have done as a temporary measure with my exhaust; it's open when I need it most, WOT, and closed at all other times. Eventually I will add a cheap vacuum control solenoid so that I can determine if the buterflies are open, closed, or "auto" (like now). NPP in a box might be a good alternative too, if that does what you want. For me, a $5 vacuum switch and a few feet of hose will meet my requirements.
Instructor
Joined: May 2008
Posts: 239
Likes: 4
Melting Slicks
Joined: May 2004
Posts: 3,017
Likes: 2
Sunset Orange (Ben) has a RPM controller that will open the flaps at a preset RPM. He also has a manual version where you either put a button on a remote or the DIC reset button.
Pipedreams sells the manual mild to wild system, which uses a remote to activate. If you have an 05 with the Home link system I think the mild to wild can use the visor buttons to activate.
The Z06 muffler will drone some 1500-1800, especially with headers. Once the flap is closed though, its just a bit louder than a stock muffler..
