VVTI 1UZ Wiring.
- Thread starter MWP
- Start date
The 1UZFE EGR Delete Kit is available for sale here.
Peewee
New Member
I'd be using a non factory ecu if I was to go VVTi
Purely because if I was to spend the extra on the VVTi motor I'd be spending a lot more in the long run (as I'd want more power)
But if you reason for going with the VVTi is to get the most power while sticking with the factory ecu to keep it legal then fair enough.
That said any ecu can run with a manual you just need to trick it.
It will be no harder than any other (bar uzs131 crown of course)
However, I can guarantee that the VVTi cars have other controllers that aren't in the front cut, and you'll have to source them elsewhere.
Another thing I can guarantee you is that a 1990 1uz + aftermarket ecu + cams will be cheaper and more powerful than a stock VVTi.
Purely because if I was to spend the extra on the VVTi motor I'd be spending a lot more in the long run (as I'd want more power)
But if you reason for going with the VVTi is to get the most power while sticking with the factory ecu to keep it legal then fair enough.
That said any ecu can run with a manual you just need to trick it.
It will be no harder than any other (bar uzs131 crown of course)
However, I can guarantee that the VVTi cars have other controllers that aren't in the front cut, and you'll have to source them elsewhere.
Another thing I can guarantee you is that a 1990 1uz + aftermarket ecu + cams will be cheaper and more powerful than a stock VVTi.
MWP
New Member
Well it would need to run the standard ECU to get through rego.
After that, i would change to an aftermarket or build my own ECU.
I thought a VVTI version might be a good idea as itll probably be a newer engine, and i dont think ill be needing that much more power (going into a RA28 = fairly light).
I wasnt sure about cost though... by the sound of it, that may be the killer.
Thanks.
After that, i would change to an aftermarket or build my own ECU.
I thought a VVTI version might be a good idea as itll probably be a newer engine, and i dont think ill be needing that much more power (going into a RA28 = fairly light).
I wasnt sure about cost though... by the sound of it, that may be the killer.
Thanks.
Peewee
New Member
I'd honestly expect 5k for one with a full loom and ecu.
And even then you can't guarantee you'd have it all.
Soarer's have a fuel pump ECU behind the B-pillar.
It wouldn't surprise me if all post 1995 1uz's ran something similar (instead of the relay).
Whether not having this will cause the motor to run in limp mode I really don't know.
Anyway, being in NSW you just have to get a aftermarket ecu that can be locked, get a free emmisions test, and it will pass.
I'd be looking at the Autronic SM4 if you got the VVTi model.
VVTi 1uz + full extractors and exhaust + Autronic and some proper tuning would be a weapon.
And even then you can't guarantee you'd have it all.
Soarer's have a fuel pump ECU behind the B-pillar.
It wouldn't surprise me if all post 1995 1uz's ran something similar (instead of the relay).
Whether not having this will cause the motor to run in limp mode I really don't know.
Anyway, being in NSW you just have to get a aftermarket ecu that can be locked, get a free emmisions test, and it will pass.
I'd be looking at the Autronic SM4 if you got the VVTi model.
VVTi 1uz + full extractors and exhaust + Autronic and some proper tuning would be a weapon.
MWP
New Member
Im in Adelaide.
Im not sure what the deal with emissions is here, but i expect ill have to pay for the testing and it wouldnt be cheap, hence why id rather aviod it to begin with.
Adelaide japanese dismantlers have listed on thier website that a VVTI 1UZ minus ECU and looms is $1850 (im not sure how recent the price is though).
Ill have to give them a call.
BTW, does anyone know what sump they come with and what the exst headers look like?
Ill need a front sump and tight headers like the UZS131 (ill get extractors made later).
Im not sure what the deal with emissions is here, but i expect ill have to pay for the testing and it wouldnt be cheap, hence why id rather aviod it to begin with.
Adelaide japanese dismantlers have listed on thier website that a VVTI 1UZ minus ECU and looms is $1850 (im not sure how recent the price is though).
Ill have to give them a call.
BTW, does anyone know what sump they come with and what the exst headers look like?
Ill need a front sump and tight headers like the UZS131 (ill get extractors made later).
Peewee
New Member
Sump depends what car it came out of.
Chances are it was a front sump as only the Soarer had a rear sump in 97-99
Headers are no doubt fairly good (relatively speaking, Toyota used headers to restrict power on these motors)
That motor has been on Adelaide J4P for about 9months.
Apparently they had a few of them. But they are usually pretty good with keeping their website update.
Just remember that you are basically going into uncharted waters with VVTi stuff, and things like wiring diagrams are not readily available.
Other things like timing belts and the like may be different too.
Coilpacks could be expensive if one fails.
Chances are it was a front sump as only the Soarer had a rear sump in 97-99
Headers are no doubt fairly good (relatively speaking, Toyota used headers to restrict power on these motors)
That motor has been on Adelaide J4P for about 9months.
Apparently they had a few of them. But they are usually pretty good with keeping their website update.
Just remember that you are basically going into uncharted waters with VVTi stuff, and things like wiring diagrams are not readily available.
Other things like timing belts and the like may be different too.
Coilpacks could be expensive if one fails.
MWP
New Member
Yeh, i know not many people have tried conversions with these 
But i would like to think i can get the wiring sorted... i am an Electronics Tech and have done car electrical work before (like designing/building my own ECUs).
The problem will be working out what goes where and what does what.
After that it should be simple enough to get working.
... im waiting for sideshow to reply
But i would like to think i can get the wiring sorted... i am an Electronics Tech and have done car electrical work before (like designing/building my own ECUs).
The problem will be working out what goes where and what does what.
After that it should be simple enough to get working.
... im waiting for sideshow to reply
toyotav8boat
New Member
1uz vvti
mwp
to control the vvti you will need a motec m800
motec seem to be the only ecu that can truly control vvti
pete
mwp
to control the vvti you will need a motec m800
motec seem to be the only ecu that can truly control vvti
pete
cyberdiamond
Member
The AEM can also apparently do VVTi control properly as well?
It has loads of input/outputs that are configurable and can be user tuned.
Keep us updated as I will also need to find out about Adelaide's emmission tests with the VVTi.
It has loads of input/outputs that are configurable and can be user tuned.
Keep us updated as I will also need to find out about Adelaide's emmission tests with the VVTi.
