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aftermarket header

Discussion in 'HYBRID -> ED-EF / DA' started by b18a1crx, Jun 21, 2010.

  1. b18a1crx

    b18a1crx b18a1crx

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    hi. i have a 91 crx si with a 91 b18a1 motor. i was wondering what header would have more horse power and or if it would fit?
    a 90-91 header or a 92-93 header? i know on a stock motor the 92 and 93 b18a1 have like 10 more hp. im kinda new to this website so any help would be appreciated
     
  2. CAFROG

    CAFROG Honda Minion VIP

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    Not in the stock OEM exhause manifold.......I believe its in the head or IM.

    If you want performance..... a stock LS exhaust manifold will not be worth your time.

    Many people say good things about a tri-y header. Many companies make replicas of these now (since the technology is kinda old) so they aren't too expensive and have quality welds.
     
    Last edited: Jun 21, 2010
  3. b18a1crx

    b18a1crx b18a1crx

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    thanks for the help ill look those up
     
  4. 78civic

    78civic Junior Member

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    The 4-2-1's usually give the better all-round performance.
    Like on the early 90's accords, tegs, and early RS civics the 'stock' 4-2-1's always gave better hp #'s (for basically stock configuration)

    What's on the car now?
    If it's just a street car, with air, stay with the 4-2-1 for the torque gains.
    I think that the different years had different mounting points and clearances under the oil filter, trans linkage and length before the 'doughnut' collector.

    E
     
  5. b18a1crx

    b18a1crx b18a1crx

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    its has the stock exhaust manifold on it now. it has a bosal cat-back on the back half.
    just wanted somthing to add some hp and some tone to it.
    the stock manifold is a 4-1 i think. u think the 4-2-1 will be louder?
    yeah it is just a street car.
     
  6. CAFROG

    CAFROG Honda Minion VIP

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    4-2-1 isn't necessarily louder but better mid-range performance. I feel 4-1 is top end
     
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