NPP baffles
Thread Starter
Melting Slicks
Joined: Oct 2009
Posts: 2,004
Likes: 392
From: Long Island New York
NPP baffles
I just noticed last night that only the baffle on the passenger side of the car is closed when the car is off. I was thinking they would be closed on both sides of the car when not in sport or track. Is this normal? I'm at work now so I can't check to see what happens when I start the car until later.
Le Mans Master
Joined: Nov 2005
Posts: 6,099
Likes: 64
From: Houston TX
St. Jude Donor '09
Same here. That is my understanding of how they are supposed to operate, and why pulling the fuse makes them stay open all the time. It takes the car running and feeding them power to close them.
Safety Car
Joined: Aug 2004
Posts: 4,083
Likes: 190
From: IL / FL .
The side that is closed is stuck, either the mechanical valve or its electronic actuator. You might try tapping the bottom of the pipe with a mallet in that area to see if it will snap open. It's not an electrical circuit problem. The dealer will likely have to replace the muffler assembly or possibly just the actuator. Let us know what it turns out to be.
Thread Starter
Melting Slicks
Joined: Oct 2009
Posts: 2,004
Likes: 392
From: Long Island New York
The side that is closed is stuck, either the mechanical valve or its electronic actuator. You might try tapping the bottom of the pipe with a mallet in that area to see if it will snap open. It's not an electrical circuit problem. The dealer will likely have to replace the muffler assembly or possibly just the actuator. Let us know what it turns out to be.
Last edited by BlueDevilZ51; Apr 15, 2015 at 11:43 AM.
Thread Starter
Melting Slicks
Joined: Oct 2009
Posts: 2,004
Likes: 392
From: Long Island New York
Okay so I just got home from work, and as I said before when the car is off one NPP baffle is open the other closed when the car is shut down. When I start the car in tour they both close. When I go into sport or track they both open. I know you guys said when your cars are off both baffles are closed on your cars. Being the baffles operate correctly to match the mod the car is in I'm not going to worry about one open and one closed when the car is shut down. Maybe they changed the baffle sequence on later cars? My car had a TPW of 3/23/15.
Last edited by BlueDevilZ51; Apr 15, 2015 at 09:38 PM.
Burning Brakes
Joined: Jun 2002
Posts: 769
Likes: 130
From: Vacaville Ca
Okay so I just got home from work, and as I said before when the car is off one NPP baffle is open the other closed when the car is shut down. When I start the car in tour they both close. When I go into sport or track they both open. I know you guys said when your cars are off both baffles are closed on your cars. Being the baffles operate correctly to match the mod the car is in I'm not going to worry about one open and one closed when the car is shut down. Maybe they changed the baffle sequence on later cars? My car had a TPW of 3/23/15.
Thread Starter
Melting Slicks
Joined: Oct 2009
Posts: 2,004
Likes: 392
From: Long Island New York
Sorry i misquoted the previous guys. They seem to be the same as you both open while shutdown. Strange I have one open one closed when shutdown but works correctly in different mods while running.
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