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  1. Join Date
    Oct 2010
    Posts
    70
    #1
    my car is honda SiR. what would you suggest? Pag nagpagawa ako ky brodeth/mufflerland, ano difference nia sa pagpagawa sa mga iba pagawaan? anong quality pinagkaiba nila? thanks.

  2. Join Date
    Oct 2010
    Posts
    70
    #2
    eto nabasa ko:

    4-2-1 :power gains found in the low end power band.

    4-1: power gains found in the high end power band.

    question: pag naka 4-2-1 ba ako, babagal ako sa high rpms? pag naka 4-1 ba ako, mabagal ako sa low rpms? thanks.

    please suggest lang. thanks.

  3. Join Date
    Oct 2010
    Posts
    70
    #3
    ano din pala pinagkaiba ng mandrel bent? mas mabilis performance? ano pinakamaganda headers?

  4. Join Date
    Oct 2010
    Posts
    70
    #4
    pag pinalitan ko ba ung stock headers ng SiR ko, mgcchange ng performance?

    for example, ngpalit ako ng 4-1 headers, babagal pa hatak ko sa low rpms pero bilis naman sa high rpm? OR same padin hatak ko as stock headers pero bibilis lalo sa high rpms? please help. thanks.

  5. Join Date
    Aug 2004
    Posts
    22,705
    #5
    The differences between 4-1 and 4-2-1 headers, if we're talking about properly designed modern ones, are not as great as they used to be.

    It's all in the tuning of the length of the primaries and the design of the collector.

    If you're serious about upgrading, you either spend the coin for an original system, or go to an aftermarket fabricator like Brodeth, SMT or Mufflerland and ask what's the best design they have.

    Ang pagbalik ng comeback...

difference of 4-1 and 4-2-1 headers or others