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Location:
newcastle
Registered:
January 2004
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VVTI on 20vs
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Sun, 17 July 2005 11:37
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just a question when does the vvti come in on a standard 20v,any help would be great  rpm wise i mean
cheers pete
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Location:
Sydney
Registered:
February 2003
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Re: VVTI on 20vs
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Sun, 17 July 2005 12:01
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i thought they were just vvt...
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: VVTI on 20vs
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Sun, 17 July 2005 21:52
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indeed you are correct, 4age 20V's only have VVT, not VVTi.
IMSC, silvertop 20V's switch on the VVT at around 3000rpm, and turn it off again around 6500rpm...
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Location:
newcastle
Registered:
January 2004
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Re: VVTI on 20vs
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Mon, 18 July 2005 06:38
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so 3750rpm is to high then,im running microtech so yeah not sure when it should kick in.
cheers pete
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Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
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Re: VVTI on 20vs
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Mon, 18 July 2005 09:06
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please - dont quote me on those figures!! They are rough estimates of a vaigue memory!!!
try doing some searching via google, on club4ag and on twincam.org (when it's back online  ) for some more precise figures.
Besides, your tuner should be able to work out when is best to turn it on and off!!
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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: VVTI on 20vs
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Mon, 18 July 2005 09:34
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indeed, a few back to back power runs (maybe 2 each) with and without it on will tell you exactly when to swap over.. ie where the curves intersect.
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Location:
newcastle
Registered:
January 2004
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Re: VVTI on 20vs
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Tue, 19 July 2005 10:19
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thanks guys ill have a look on club4ag
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Location:
wollongong
Registered:
March 2004
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Re: VVTI on 20vs
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Wed, 20 July 2005 00:55
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the blacktop 20v vvt is dependant on throttle position more than rpm. It can turn on at any rpm, when you push the throttle past about 50%.
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Location:
Canberra
Registered:
May 2002
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Re: VVTI on 20vs
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Wed, 20 July 2005 01:19
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Just from seat of the pants tuning on mine, I had it engaging at 2500 and off at around 6000. It seemed to give a nice linear power curve that way.
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