Header Question
Thread Starter
Blow Me
Joined: Feb 2003
Posts: 1,128
Likes: 0
From: Radford/Virginia Beach
Header Question
What is the difference in a 4-2-1 and 4-1 header. I know the difference physically but what do they do for performance. By the way i was wondering on a crx if that makes a difference.
Registered Member
Joined: Nov 2002
Posts: 255
Likes: 0
From: VA Beach
4-2-1 will give you better mid-range acceleration, say between 2500 - 5000 rpms. 4-1 are all about top end acceleration, say after 4500 rpms or so, depending on the length of the primary exhuast runners.
Thread
Thread Starter
Forum
Replies
Last Post
