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b20/vtec

Discussion in 'ECU's, Electronics, and Tuning' started by Sicrx55, Sep 8, 2008.

  1. Sicrx55

    Sicrx55 jont

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    I have b20/vtec in an ek hatch and i have VAFC i was just wondering where is the best place to set vtec for the best performance?
     
  2. LightWeightChamp

    LightWeightChamp Honda FTW!

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    it was set where it was stock for a reason. about 5800-6200 is where you want it, mines set at 5100, ya its sweet to have early crossover, but the power curve on the dyno is all wacked cuz its so low
     
  3. FLounder

    FLounder power hungry VIP

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    im not sure i agree with it being so high on a b20vtec setup... there are many stock cars that have much lower crossovers than that. i like the vtec crossover on my b20vtec set low and the transition is smooth. its not drastic and there is no large drop or jump in power. i mean i know what LightweightChamp is saying, i used to have a b16a and if you lowered the crossover to 4500 on that it was awful, with a huge dip in power. all that being said the only way to know for SURE is to have it dyno tuned and set your crossover at the exact optimum point.

    just as a point of reference i have my crossover set at 4500 and i shift by 7500 at the most. usually i keep it less than 7k.

    i will be dyno tuning sometime soon and then ill know for sure....
     
  4. honds solo

    honds solo New Member

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    sonuds like to me a vfac is must when it comes to an ls /or cr vtec.

    well the fact of takeing an non vtec engine that wasnt intended for high r's 7700/8000.
    but i guess that depends on the build and balanceing of the assmebly .

    btw im collecting the stuff to build one so i was curious about the vafc
     
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