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Location:
Sydney
Registered:
February 2003
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 VVT on 4AGE 20V using Microtech MTX-8
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Mon, 17 March 2003 02:35
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Does anyone know how this works? When I put AUX output on low cam comes on but does not swich at swiching point. When I put AUX output off low cam is off and drives like a dog until 4000rpm when high cam kicks in and goes wild! Aux output has been wired to give negative output signal via a relay to give the switchable +12v signal that VVT solenoid requires.
Any assistance is much appreciated.
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: VVT on 4AGE 20V using Microtech MTX-8
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Mon, 17 March 2003 15:04
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Does the VVT solenoid really need a seperate relay? If it's just a switch I would hook it straight up to the aux output. The T-VIS solenoid on my bigport motor was hooked up like this with no problems (eventually).
You need to adjust the aux output to switch off at around 4-4500rpm somewhere, preferably at the same revs as the standard computer.
It's also possible to adjust the aux output to switch on or off at whatever revs or MAP you set.
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Location:
Sydney
Registered:
February 2003
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Re: VVT on 4AGE 20V using Microtech MTX-8
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Tue, 18 March 2003 01:42
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I've tried just running VVT with the AUX output which is a 5v signal, but VVT needs a 12v input to operate the VVT solenoid. How does TVIS work? is it on before 4000rpm and then switches off after the switch point? Or vice versa?
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Toymods Board Member
I supported Toymods
Location:
Turramurra, Sydney.
Registered:
May 2002
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Re: VVT on 4AGE 20V using Microtech MTX-8
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Tue, 18 March 2003 01:51
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Ah ok, that's a bit of a bugger then.
With the standard computer & set up T-VIS switches off over 4 or so grand, but I set it up the other way round on my motor, which worked ok with the solenoid/vac switch backwards.
it's pretty easy to change the signal to be off or on at the set rpm, there's an auxoutINV option which turns the signal off at the set rpm when it is selected.
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Location:
Sydney
Registered:
February 2003
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Re: VVT on 4AGE 20V using Microtech MTX-8
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Tue, 18 March 2003 04:11
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Thanks Joel, I'll give the AUX outputNv a try.
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Location:
Syndey
Registered:
December 2002
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Re: VVT on 4AGE 20V using Microtech MTX-8
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Fri, 14 November 2003 00:51
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Guys, i need some help with the 20v soloniod,
do you need to apply power to turn it on or off??
if you disconnect the soloniod what does it do??
Dale
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Location:
Richmond NSW
Registered:
September 2003
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Re: VVT on 4AGE 20V using Microtech MTX-8
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Fri, 14 November 2003 03:25
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Hey is this all just a standard 20v.. what performance do u got with that of the microtech computer to that with the normal ecu is it that much of a difference ????
matt
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Location:
Syndey
Registered:
December 2002
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Re: VVT on 4AGE 20V using Microtech MTX-8
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Fri, 14 November 2003 03:29
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Matt
i dont know this motor is in a sprinter and it dosnet have the factory ecu to do a back to back test, im installing the microtech over the weekend and will probably tune it on wednesday night,
just need to know what the go is with the VVT soloniod! it has silver rocker covers.
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