Lancer Ralliart — Stage 2 ECU Tune
- Enhanced turbo responsiveness with highflow unit
- Increased boost pressure to 23 PSI
- Optimized ECU calibration for turbo efficiency
- Improved exhaust flow characteristics
- 225kW power output achieved
The Ralliart often gets overlooked next to its Evo X sibling, but the 4B11 responds well when you give it the hardware it deserves. This 2011 build pairs an Evo X highflow turbo with a complete exhaust system, giving the calibration enough headroom to deliver 225 kW at the wheels and 425 Nm. Peak boost sits at 1.58 bar — safe territory for the platform with the right supporting work.
Stage 2 territory for this chassis typically means sorting fuelling, cooling, and intake before chasing bigger numbers. The dyno result shows the calibration made good use of the Evo turbo's broader compressor map without pushing the 4B11 into territory that demands built internals. Intended for closed-circuit use where the extra midrange torque and top-end really shine.
Is 425 Nm safe on a stock 4B11 bottom end?
It's on the upper edge. Many stock 4B11 engines handle this torque level without drama, but it depends heavily on the condition of the engine, tune quality, and how it's driven. Conservative ignition timing and clean fuelling are critical.
What fuel was this tune calibrated for?
Fuel type wasn't recorded with this file. Before using any calibration, confirm with your tuner what octane or ethanol content it was written for — running the wrong fuel can cause serious damage.
Does the Evo X highflow fit the Ralliart without major changes?
Yes, the Evo X turbo is a common upgrade for the Ralliart. Both use the 4B11, so the swap is straightforward with the right exhaust and intake plumbing.
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