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Throttle

Discussion in 'General Tech and Maintenance' started by IceBolt, Mar 11, 2003.

  1. IceBolt

    IceBolt Senior Member

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    Hey my dad says that the 97 prelude revs really freely but the civic SiR doesn't rev as freely. Is there a reason for this? The prelude has vtec after a certain rpm, but the SiR has ivtec which has vtec all the way.. is this why?
     
  2. sirkurtius

    sirkurtius Member

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    first the SiR doesn't have vtec all the way, the vtec kicks in at around 4600 rpm
    i-vtec means that the engine self retards or advances when at idle to give u a smooth idle and better emmissions on start up.
    i don't really under stand by what you mean be reving freely?
    is the car not smooth when reving?
    or does it not rev as fast?
     
  3. B16

    B16 Super Moderator VIP

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    ivtec is in 01+ cars
     
  4. Domeskilla

    Domeskilla Senior Member

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    Except civics and s2k's. Civic's are still using a d17 vtec motor. S2k is a 3 stage vtec, not i-vtec. Only the k-series are i-vtec and new Accords (what block are these?)
     
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