Keep the base ECU
For many base model turbo builds, staying on the original non-turbo ECU is advised when the tune has the correct injector parameters, MAF and airflow scaling, open-loop and closed-loop configuration, and base timing control.
Turbo-converted base model ECU • From $80 USD
BoostReady Patch for base model turbo conversions.
A dedicated EvoPro patch for turbo-converted Mitsubishi base model vehicles still running the original non-turbo ECU. It upgrades the real referenced load calculation and load-axis behavior needed for boost-aware fueling, timing, VE, MIVEC, and cylinder fuel trim work.
This patch is for working turbo-converted base model vehicles with the original base model ECU. It is not a cheap substitute for an XML definition, and it is not meant to fix existing mechanical, wiring, sensor, or tuning problems.
Why this patch exists
Keeping the base model ECU can be the smart move, but the stock non-turbo load ceiling becomes the problem.
Fix the boost-load problem
A turbocharged setup does not make much sense when the calibration is still trapped around the original 100% load range. BoostReady upgrades the real load calculation and referenced axes so boost areas can be tuned properly.
Built for real XML workflows
This is for people already working with a proper XML. If your XML was created by searching bytes in HxD instead of using Ghidra, IDA Pro, or validated references, the axis locations may be wrong.
Three new MAP-based load calculation tables
BoostReady adds load calculation support to the non-turbo binary for turbocharged operation.
MAP Based Load Calc #1
Hot / interpolated load calculation table for boost-aware operating conditions.
MAP Based Load Calc #2
Cold / interpolated load calculation table for temperature-sensitive boost/load behavior.
MAP Based Load Calc #3
Additional MAP-based load calculation table used to support the upgraded load model.
What it changes
This patch is about correct load and airmass calculation when the engine reaches boost. The goal is cleaner calculated load, better referenced load-axis usage, and easier fuel delivery setup for turbo-converted base model vehicles.
Customer requirements
Please confirm these before purchasing. This patch is not for every car.
Required vehicle setup
- Base Model ECU
- Turbo-converted base model vehicle
- 3 Bar or 4 Bar MAP sensor
- OEM Base Model intake manifold
- No current mechanical, wiring, sensor, or tune faults
Important limits
- Do not upgrade to Evo X / Ralliart intake manifold for this workflow; this avoids the IAT-related mismatch.
- This patch does not fix a bad tune. It upgrades load calculation and MAP/load axis behavior.
- You should already have injector parameters, MAF scaling, airflow scaling, fuel configuration, and base timing maps handled.
- You should already have a valid XML, or purchase the patch + XML upgrade service.
Tables affected by the load-axis upgrade
The patch targets the real referenced load axes used across the calibration.
High Octane Closed Loop AFRLow Octane Closed Loop AFROpen Loop Fuel CalibrationLimp Mode FuelBase TimingUpper Bound TimingLower Bound TimingAcceleration Retard TimingIgnition Warmup RetardVolume EfficiencyWarmup Fuel CompensationSpark CorrectionsMIVEC IntakeMIVEC ExhaustCylinder Fuel Trims #1-#4
Not an XML shortcut
If you already have a properly referenced XML, the $80 service covers the BoostReady patch. If you want the patch plus the upgraded tables and axes defined inside your XML because you are not sure your XML is correct, choose the $200 service.
Patch preview and load log review
Add these two images to the site root when publishing: turboloadpatchreview.jpg and loadlogreview.jpg.
Live review video
Real-time review and explanation of the BoostReady load patch workflow.
Purchase and delivery
Pick the service level that matches your XML readiness.
BoostReady Patch
$80USD
For customers with a proper existing XML. Includes the patch service for the submitted ROM file.
Buy patchPatch + XML axis/table upgrade
$200USD
For customers who want the BoostReady patch plus the upgraded tables and axes defined cleanly in their XML.
Buy patch + XML upgradeAfter purchase
Email your ROM file, proof of purchase, vehicle details, MAP sensor type, intake manifold confirmation, and current XML status to [email protected].