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Vct Controller

Shaun O

By Shaun O,
in Engines & Forced Induction

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Shaun O Enthusiast

Shaun O

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Hi there, I've had my RB30DET for a few months now, it's been running off an RB25DET ECU with a Mines chip (as far as I know) and seems to run 'okay'. Well apparently the RB25DET ECU is hard/expensive/not worth chipping for tuning. My mate gave me a working RB20DET ECU but problem is, my RB30DET has had VCT retained. Any recommendations on a controller to use to activate the VCT solenoid? (I assume it's as simple as that? I don't know much about it)

I was looking at something like this: http://www.jegs.com/i/MSD-Ignition/121/896...roductId=754062 - anyone used one of these or something like it before with success?

Cheers.

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Don Dada Mentor

Don Dada

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I used that same Msd unit when i couldnt get the Nvcs to activate when i changed from auto to manual..... Worked good, no issues although i think the gain was verrry minimal when playing with different settings on the road.

Boost did seem to come on slightly earlier and a little faster but as i said there was very little difference almost undetectable between on and off....

Bear in mind i was using the stock ecu, but i think the benefits of the nvcs can be compensated for or over ridden with a good tune of ign timing down in that area

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Shaun O Enthusiast

Shaun O

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being in NZ why not just get a link G4 plugin and save yourself the hassle?

Unfortunately I'm not made of money, I'm probably going to use a NISTune daughterboard, I'm not really keen to spend $2k+tuning on a standalone ECU when I have a fairly basic engine. I wouldn't think hooking up a bunch of extra wires would be $2k+ worth of hassle.

I used that same Msd unit when i couldnt get the Nvcs to activate when i changed from auto to manual..... Worked good, no issues although i think the gain was verrry minimal when playing with different settings on the road.

Boost did seem to come on slightly earlier and a little faster but as i said there was very little difference almost undetectable between on and off....

Bear in mind i was using the stock ecu, but i think the benefits of the nvcs can be compensated for or over ridden with a good tune of ign timing down in that area

Ah sweet that someone has used it in the same way, I found a few forum posts about others using it on the same engines too so that's good. The engine has already been built with VCT retained so I may as well get a controller for it.

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KiwiRS4T Grand Master

KiwiRS4T

Posted
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Unfortunately I'm not made of money, I'm probably going to use a NISTune daughterboard, I'm not really keen to spend $2k+tuning on a standalone ECU when I have a fairly basic engine. I wouldn't think hooking up a bunch of extra wires would be $2k+ worth of hassle.

Ah sweet that someone has used it in the same way, I found a few forum posts about others using it on the same engines too so that's good. The engine has already been built with VCT retained so I may as well get a controller for it.

Get the controller. You can find the optimum on/off positions on the dyno. As per one of SK's posts i read years ago: do one run with it on and one run with it off - the charts will show you where to set the changeover points.
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STATUS Grand Master

STATUS

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the msd switching system works but needs a coil pack adapter, and is dear. I have a spare tach adapter you can have if you decide to go that way though. (i use alot of the switches and adapters for NOS installs)

the jaycar one works and is about $35 bucks (search in the forced induction forum, i posted part numbers)

or use a Z32 ecu like bubba posted.

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Don Dada Mentor

Don Dada

Posted
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the msd switching system works but needs a coil pack adapter, and is dear. I have a spare tach adapter you can have if you decide to go that way though. (i use alot of the switches and adapters for NOS installs)

the jaycar one works and is about $35 bucks (search in the forced induction forum, i posted part numbers)

or use a Z32 ecu like bubba posted.

No coil pack adapter needed.... just take a signal for the tach output from the ecu. Worked fine for me.

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Shaun O Enthusiast

Shaun O

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Yeah I think the tach adapter is for the non-digital MSD RPM switch?

Also, URAS, I couldn't find the part numbers you posted from jaycar but I found this http://www.jaycar.com.au/productView.asp?I...mp;SUBCATID=347 - but how can you use that to make it switch off again at higher RPM?

And I could mod a Z32 ECU but I already have an RB20DET ECU that I got for free and the Z32 one would cost more than a VCT controller along with having to modify the Z32 ECU/my loom which I'd rather not.

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