NPP and Headers
Thread Starter
Safety Car
Joined: Nov 2007
Posts: 4,537
Likes: 1,403
From: Bethesda MD
NPP and Headers
Has anyone with an NPP equiped car added headers + CAI and dynoed with the NPP open and the NPP closed to see what the difference is?
I'm still amazed that it is only worth 6HP per GM and wondering if adding headers is when the system really starts to help.
I'm still amazed that it is only worth 6HP per GM and wondering if adding headers is when the system really starts to help.
Melting Slicks
Joined: Jun 2004
Posts: 2,130
Likes: 54
From: Granbury, Pecan Plantation TX
You can dyno with them open by pulling the fuse, however, if you dyno with them closed they will automatically open between 2800 ~ 3000 rpm. You would need to physically wire them shut to do it with them closed.
Team Owner
Joined: Mar 2005
Posts: 20,933
Likes: 905
From: salem OR
on top the gain With headers
