Ford Focus Forum, Ford Focus ST Forum - View Single Post - Possible to ID manufacturer?
View Single Post
Old 12-09-2012, 07:56 PM   #7
Focus Addict
02ztsian's Avatar
Join Date: Oct 2004
Fan#: 14466
Location: Calgary, Alberta, Canada
What I Drive: V6Mistake, 03 ZX3

Posts: 1,100
FF Reputation: 8 02ztsian Good Standing Member
Buy-Sell-Trade Rating: (14)
If you go with the 4-2-1 header make sure that it pairs 1 with 4 and 2 with 3 like this one...

to properly scavenge the exhaust pulses.
I can't remember where I read this but the 4-1 design is supposed to be a high rpm header.
02ztsian is online now  
    Reply With Quote