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When Does Vtec Engage On A Gsr

Discussion in 'General Tech and Maintenance' started by legutki, May 12, 2003.

  1. legutki

    legutki Senior Member

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    When does vtec engage on a stock b18c. would anybody recommend changing the stock setting?
     
  2. JDMilan

    JDMilan Senior Member

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    I believe either 4400 or 4500rpm when the secondary butterflies open up on that manifold.



    Milan
     
  3. lsvtec

    lsvtec GNU/Linux Evangelist

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    I don't know when the butterflies open, but the VTEC crossover for the P72 ECU is at 4400 RPM.
     
  4. MR.B

    MR.B Junior Member

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    Yea I notice mines comes on around 4500 rpm...
    That's when the engine changes tones..
    However it really doesn't start to pull until about 5300 or 5500...
    That's why I don't like the dual stage...
    I much rather have a single stage like on the other VTEC's..
     
  5. JDMilan

    JDMilan Senior Member

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    Actually now that you guys mention it, i think it engages at 4400rpm and the butterflies open at 5500-5700rpm

    not sure though, never had a 1.8 nor that intake manny.


    Milan
     
  6. lsvtec

    lsvtec GNU/Linux Evangelist

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    I do not have the GSR manifold (using a B16 head) so I garauntee that the VTEC crossover is at 4400. It is very audible with ITR cams.
     
  7. Viperlocc_B18C1

    Viperlocc_B18C1 Senior Member

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    so when does it open on the p28? same rpm's? i have the mugen chip in mine and it opens at 4400 and redlines at 8200 and i would like to know if this chip is fubar'd
     
  8. pills_PMD

    pills_PMD Super Moderator

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    mugen does not make "chips"
    you have a clone of a mugen ECU and someone changed the rev limit and the vtec crossover.
     
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