Tuning 1998+ engine ECU...

[JBrady]

OK, it has been almost 7 years since the US version VVTi 1UZFE was introduced... and like headers... there doesn't appear to be any aftermarket support for the engine.

Several things would be helpful.

Removing/re-setting the RPM limiter. Stock is 6350rpm and should be closer to 7000.

Removing the top speed limiter.

Adjusting A/F ratios.

Adjusting timing maps.

Changing the transmissions shift patterns.

Changing the electronic throttle actuator response.

I would think that the Japanese market would have decoded the ECU and provided a solution but I do not speak Japanese and using translators on their websites leave lots of questions unanswered. Any ideas, suggestions, solutions?

 

[Zuffen]

J Brady,

Look up Jeff Harper on ALSC he (well his charming wife actually!) has translated lots of stuff on Soarers.

If anyone can find out it is Jeff.

 

[Peewee]

The solution is to run a MoTeC ecu.

These are about the only standalone aftermarket ecu that can handle full control of the vvt-i, and knock sensors (I think), as well as your traction control, etc etc.

But expect to pay about $4000 AUD for one