VAFC II QUESTION__<Please Help>
05-17-2004, 09:40 PM
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VAFC II QUESTION__
At what RPMs is best to set the vtec engagement with the apexi vafc II controller?
i hear some people say 4500 rpm, some say 5000 rpm, some say 5800 rpm.
VAFC II-does it have any cons?
from my driving and from what others say, vtec kicks in at about 5800 rpm, but some say 6000 rpm.
i hear some people say 4500 rpm, some say 5000 rpm, some say 5800 rpm.
VAFC II-does it have any cons?
from my driving and from what others say, vtec kicks in at about 5800 rpm, but some say 6000 rpm.
05-18-2004, 11:29 AM
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Yes, there are varying beliefs of the exact RPM where VTEC kicks in. To be 100% sure, I recommend that you turn on the V-AFC display value for VTEC, strap the car on the dyno for a baseline run (this will also help to slow down the RPM climb), and watch the VTEC "ON / OFF" on the display and mark the exact RPM at which it occurs.
As for lowering the VTEC, I don't think I've yet read of someone with a NA car say that lowering the VTEC helped out at all. And with the FI cars, most people (other than one that I recall) found that raising VTEC created a smoother / more powerful VTEC transition.
BTW, I'm speaking from my memory of V-AFC I when saying that you can display the VTEC On/Off.
As for lowering the VTEC, I don't think I've yet read of someone with a NA car say that lowering the VTEC helped out at all. And with the FI cars, most people (other than one that I recall) found that raising VTEC created a smoother / more powerful VTEC transition.
BTW, I'm speaking from my memory of V-AFC I when saying that you can display the VTEC On/Off.
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