4-2-1 vs 4-1 header
Senior Member
Joined: Sep 2005
Posts: 1,930
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RE: 4-2-1 vs 4-1 header
I've seen many dynos for both.Most of the 4-1s I've seen out of Hondas make gains from 5k rpm upward, and most 4-2-1s I've seen make better midrange with less gains up top. You really won't see much difference between the two, a few hp here or there. I would get whatever is cheapest for a street car (Megan). The only real difference you'll see out of a header would be comparing a stock/Megan/DC Sports to a Bisimoto/DTR/RMF/etc.
HCF Member
Joined: Aug 2006
Posts: 2,360
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RE: 4-2-1 vs 4-1 header
ORIGINAL: reaper2022
I meant to say that they were usually 2-piece or 1-piece, respectively. Either way, what does it matter how many pieces a header is? Everybody I've talked to agrees that it's easiest to just bolt a 2-piece together before installing it anyway.
Also, for the record, I was quoting an issue of Super Street (Super Street, October 2005, page 136) on the power ranges. If you don't think a 4-1 is better for mid-range, take it up with Roel at Super Street, who wrote the buyer's guide.
And 03, I appreciate the support, but he has the pictures right.
I meant to say that they were usually 2-piece or 1-piece, respectively. Either way, what does it matter how many pieces a header is? Everybody I've talked to agrees that it's easiest to just bolt a 2-piece together before installing it anyway.
Also, for the record, I was quoting an issue of Super Street (Super Street, October 2005, page 136) on the power ranges. If you don't think a 4-1 is better for mid-range, take it up with Roel at Super Street, who wrote the buyer's guide.
And 03, I appreciate the support, but he has the pictures right.
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