VVT-i Head ?

[chronoti]

so i'm going to go out and buy me a extra sets of heads for my 96 1mz.

now i was wondering could a unit like camcon be able to control the VVT-i system. mainly can it control it with out feedback from the ecu.

[QuadCamSix]

Yes and no

The VVTI can be run in open loop but you need a predictable vacume source. The 2JZ-GE has a massive vacume tank that you could use to actuate the VVT

The megasquirt can run VVT-i thorough its boost control feature in case you are considering an EMS.

[Toysrme]

vvt-i can be controlled by anything that can modulate a signal. n2o controller, wastegate controller, fuel injector controller... Seems like a small (not bad) waste of money to me less someone wants to run big compression ratio pistons, or alot of boost.

For less than $100 more you can have a full blown piggyback that'll control ignition & A/F ontop of that.



You'll need the revised intake manifolds to go along with a head swap. And you'll want the corrisponding ECU to go with it, even if you don't run the thing. Some ugly things have happened in the past mixing MZ head & manifold components with one another.

[Toysrme]

Here is how vvt-i works in general. Thought that would help you.

[-SCWEET1-]

Quick Question, How are you going to control vvt-i, if your car did not come with it? Do you have to change out the ECU also?


Toys, are you saying even an safc can do the work?

[Toysrme]

No, it requires something that can generate, or modify a form of PW signal, Even if it's based on a single frequency. An SAFC simply changes the voltage (resistance) of a signal.
An injector/solenoid/motor controller modulates in pulses. (Pulse Width Modulation = pwm)