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Avance vvtc controller
Topic Started: Sep 2 2009, 03:06 PM (925 Views)
hogan1
Stage 4
I just bought an avance vvtc for the 4age silvertop, has anybody used one of these before or have any information about them?

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JDM
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AE111
looks kool. does it work with blacktop?

ive thought about going down this route but surely vvt kicks in when it does because thats the ideal time/conditions for it to do so?

couldnt altering this be dangerous?




please prove me wrong so i can investiagte getting one myself :D
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dub-levin
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Stage 6
should work will all VVT engines on every car everywhere.
all it does is change the rpm that the vvt valve reads to kick in the timing.

you just got to know how and where to wire it on the engine
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TRUENOSAM
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Stage 6
So is that going to allow the change of valve timing and alter the air/feul ratio, doubt it

Sorry but i dont think i will work :-/
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20vees
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Stage 4
it has to work most of the japanese people have em saw in hyper rev mag, the vvt is controlled throught a transister in the ecu thise is triggered of the map sensor, i have heard of this transister burning a hole through its self, im sure there is a link to this page on this site, dont worry fully repairable
you see to make the vvt kick in earlier probaly would give u some extra hp because the factory setting on every car is tuned both for power and economy
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BZR4AGE
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JDM TODA
bigshark
Sep 2 2009, 08:39 PM
correct me if im wrong, but i thought the VVT (on the black top) is activated as soon as the right conditions are there i.e. when the engine is warm, pedal is pressed more than certain % (booting it) etc. and it is instant. it is activated even as low as 2k revs.

silver top's VVT only kicks in once 4k revs are reached, which makes sense to have such controller. so i dont see the benefit it has on a black top.
Yes I think so too, I thought VVT on 4age are throttle controlled, not RPM. So this little gadget probably activate VVT with a lower throttle compared with factory? I maybe wrong
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JDM
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AE111
Ideal mod for silver tops then
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jod
Stage 2
im running one on my fx gt....

but theres not really my much i can say about it that you guys dont know.


on my car iv got the vvt set so its just kicking in at 4500rpm right at the start of my power band. i felt like there wasn't any advantage with the vvt kicking in earlier since it doesnt suit the duration of my cams at low revs.
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hogan1
Stage 4
this is for the silvertop not the blacktop, the vvt on the silvertop comes in at 4500 on my car but i think the vvt on the blacktop is more dynamic, anybody else shed some light on this?
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Levin BZR
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20vees
Sep 5 2009, 09:31 AM
vvt on silver and blacktop are rev controlled 4,400 it kicks in , higher revs need more air ,low revs less air ,variable valve timing ,at 4,400 revs the inlet valves open sooner = more air
the same as mivec ,vtec, they have different cam profiles that engauge at higher revs to leave in more air
vvt on the blacktop in an oil cotrolled mechanism on the inlet cam sprocket to advance the timing
Silvertop and blacktop have not got the same technology in their vvt system.. On 20v's with the factory ECU, VVT is dependent on rpm and throttle position.The blacktop has different switching values to the silvertop, but the theory is the same.

Here this graph shows exactly how VVT is switched.

By throttle position and RPM.

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20vees
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Stage 4
but correct me if im wrong the only diffrence between ae101 and ae111 is that the ae111 has lighter internals and of course they have diffrent values ae101 usually has a afm instead of a map, of course it uses throttle position aswell to increase fuelling and spark and vvt kicks in at 4,400 on the ae111 its useless at low revs
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sabajin
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sabajin
I have the oer vtc and it works fine. It let the user feel the power sooner. Since bt 20v vvt is throtle controlled the vtc has 2 buttons in order to set the correct adjustment for the owner. One is for rpm (at what rpm you want to vvt to engage) and the other is for the thottle.

After several settings, the one that suits the best for me is engaging at 3000 rpm and the accel has to be full pressed.

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By sabajin at 2009-09-06
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hogan1
Stage 4
how did you wire the vvtc?
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sabajin
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sabajin
1 side goes connected to the ecu and the other to the vvt solenoid.
Edited by sabajin, Sep 8 2009, 01:21 AM.
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meg_omen
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Stage 5
Crampy
Sep 10 2009, 09:38 AM
OMG!!! The silvertop VVT also kicks in with TPS AND load just like the Blacktop. It i supposed to kick in down low, as it makes torque down low with VVT on. It disengages at around 6800 or something, as that's when being off is better for making power. And if you on't believe me, hook up a VVT light and have a look for yourselves. As proven on dynos here in NZ: Changing the VVT point on a stock motor will not give any gains.
There're 2 version of Silvertop, and this is the 2nd version...
The 1st is fix open at 4400rpm... :whistle:
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BZR4AGE
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JDM TODA
I thought the only difference between a facelift silvertop and a pre-facelift silvertop is the intake porting or something, one is bigger than the other. Surely Acesniper would know the answer to this
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Crampy
Stage 2
Yep. It's the intake ports that are different. VVT works the same with all silvertops. You can get it to go under 4500rpm.
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AceSniper
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Global Moderator

as above both silvertop versions and blacktop work the vvt in the same way, even the sard ecu I had did... facelift silvertop ecu's had updated electronic components
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