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Discussion Starter · #1 ·
I’m sure this question has been asked before but the search fails me. So does anybody know why DCRH joins cylinders 1 with 2 and 3 with 4? As I understand joining 2 and 3 is standard for all the usual reasons and it doesn’t seem like it would be any harder to make that kind of header. So is there any sort of a reason?
 

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Discussion Starter · #7 ·
Yeap, that's def 2-3. Heh, I guess they really suck at putting the right pic up.
Thanks for the clearup :)
 

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the ep3 dcrh was fabricated with 1-2 & 3-4 pairing. that is probably a picture for that model si. we used to complain all the time about why dc had paired it that way, but they never fixed it. maybe they dyno tested it and found it to be optimal for the ep3.
 
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