Aristo — Stage 2 ECU Tune
- Increased boost pressure capability with G30-900 turbo
- Improved intercooler efficiency for charge air cooling
- Enhanced exhaust flow with full system upgrade
- Optimized engine control management for turbo application
- Increased power and torque delivery
This 2002 Aristo runs the twin-cam VVTi 2JZ with a G30-900 single conversion, external wastegate, upgraded intercooler and piping, and a full exhaust. Stage 2 calibration was tailored around the larger compressor and turbine, with fuelling and timing adjusted to suit the new flow characteristics and wastegate control strategy.
The car made 252 kW at the wheels with 370 Nm of torque—solid numbers for a street-driven setup intended for closed-circuit use. The VVTi head responds well to boost once the factory twin arrangement is retired, and the G30 offers a good middle ground between spool and top-end flow on this platform.
Calibration focused on smooth delivery and reliable operation rather than chasing peak figures. Good foundation for an owner who wants consistent performance without constant fiddling.
Why 370 Nm with 252 kW at the wheels?
The torque curve on a single-turbo 2JZ is typically softer than the twin setup it replaces, especially when prioritising linear delivery and engine reliability. The G30-900 is sized for top-end flow rather than low-down grunt.
What does Stage 2 cover on this Aristo?
Stage 2 here includes custom mapping for the single turbo conversion, wastegate control, fuelling strategy, ignition timing, and cam timing adjustments to suit the VVTi head under boost. Hardware changes are turbo, wastegate, intercooler, piping, and exhaust.
Is this a reliable street setup?
With appropriate fuelling and conservative timing, the VVTi 2JZ is quite durable at this output level. The tune prioritises consistency and driveability, making it well suited to closed-circuit use with street manners intact.
Workshop & Dealer Access
Protunes supplies ECU calibration files exclusively to approved workshops, tuners, and dealers throughout Australia.
Apply for Workshop Access