STI MY11 G3 — Stage 3 ECU Tune
- 51% power increase on petrol fuel
- 47% torque increase on petrol fuel
- Dual-fuel capability optimized for ethanol and petrol
- Enhanced drivability across both fuel types
- Boost control optimization to 22 lbs on ethanol
- Improved throttle response via drive-by-wire calibration
This G3 STI runs a proper flex fuel setup calibrated for both 98 and E85, which makes a real difference when you're chasing reliable power on the track. The ATP gold turbo, top-mount intercooler, and full fuel system upgrade gave us the headroom to push 247 kW at the wheels and 402 Nm, up from 164 kW and 301 Nm. Peak boost sits at 1.52 bar.
The ECUTEK platform handled the flex fuel tables cleanly, with boost control and fuel delivery dialled in across the range. The custom fuel system and upgraded injectors were critical here — the factory pump and rail wouldn't have supported this output safely on E85. Built for closed-circuit and off-road competition use.
What's the advantage of flex fuel calibration on this setup?
Flex fuel lets the customer switch between 98 RON and E85 depending on availability and track conditions. E85 offers better knock resistance and cooling, which helps extract the full 247 kW safely on a hot day.
Is the factory EJ25 block reliable at 247 kW?
At 247 kW with proper fuelling and boost control, the block is within sensible limits for competition use. The custom fuel system and intercooler keep temps in check, which is half the battle with these motors.
Does this tune require 98 RON minimum or can it run on 95?
This calibration is written for 98 RON as the pump fuel baseline. Running 95 RON is not recommended and may result in knock or timing pull under load.
Workshop & Dealer Access
Protunes supplies ECU calibration files exclusively to approved workshops, tuners, and dealers throughout Australia. Platform: ECUTEK.
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