Ive got some money and am about to purchase some upgrades for my car, and I have a question. Im in the market for some racing headers, and im wondering whether I should go with 4-2-1 or 4-1.
If I go 4-1, what kind of torque loss/ daily driveability loss / problems am I looking at?
If I go 4-2-1, what kind of performance loss / advantages over 4-1 am I looking at?
Emissions / legal issues are NOT an issue here. (Good ol' Mississippi ^_^ )
Any other input would be greatly appreciated. Thanks in advance guys!

 

this might help. https://www.hondacivicforum.com/m_67945/tm.htm

 

ok. my collection of knowledge came up a bit today. i picked up a book with a bunch of back to back dyno tests on different mods on hondas. the difference between 4-1 and 4-2-1 headers are WAY less than any of us thought. its like 1-2 hp on the bottom or the top. take your pick. you probably wont even notice it one way or the other. just drop the dough on a good brand. Comptech looks solid, as does Greddy and DC. those are the easiest to find anyway.

 

What the? Name and publisher of book immediately please.

 

Id personally recomend the DC Sports ceramic coated 4-2-1, it's a solid header, and you know that you can count on it performance wise.

 

"how to build Honda horsepower"

Richard Holdener

S.A. design