The
RAX Patch is a custom patch developed by community member
Richard to enable a variety of quality of life and control improvement features on the Evo X / Ralliart. Full credit/attribution goes to him, the original forum links can be found
here RAX3: Smarter WGDC Error Correction:
RAX3 “Smarter EC” makes one simple revision to ECU boost Error Correction, Upward Error Correction no longer occurs when Boost Levels are RISING. This makes it easier to tune upward EC adjustment to provide rapid, effective correction of below-target boost, without overshooting the target during the recovery phase.
RAX3: IAT Adjusted BWGDC
This patch makes it possible to adjust your Base Wastegate Duty Cycle in line with Intake Air Temperature. A new table becomes available in the Turbo category to enable adjusted BWGDC at varying levels of IAT. The adjustment factor is applied directly to the relevant Reactive Solenoid Base WGDC Map lookup value, if that value is between 0% and 100%. A Base Wastegate value of 0% will always remain 0%, irrespective of IAT. A Base Wastegate value of 100% will always remain 100%.
RAX3: SST Upshift Boost EC Management
This patch may be useful for reducing boost levels during SST upshifts at wide-open throttle. It will limit the positive error-correction factor when RPM is dropping. With RAX3, it is now possible to set a particular “maximum positive error correction” value to enforce during SST upshifts.
RAX3: Atmospheric Boost Baro Compensation:
This patch makes it possible for the ECU to take BARO sensor readings into account when using Direct (psi-based) Boost Control. Typically, psi-based boost targets have been adjusted for atmospheric pressure via a fixed value, usually named Atmospheric Boost. With this patch enabled and the Atmospheric Boost constant set to 0, the ECU will adjust its psi-based boost targets using the BARO sensor reading. This enables the ECU to take into account atmospheric pressures at different altitudes. Support for both 3Bar and OMNI4bar MAP Sensors
RAX3: Smarter WCDG Error Correction
RAX3 “Smarter EC” makes one simple revision to ECU boost Error Correction: Upward Error Correction no longer occurs when Boost Levels are RISING This makes it easier to tune upward EC adjustment to provide rapid, effective correction of below-target boost, without overshooting the target during the recovery phase
RAX3: Fast Logging
This patch increases the bandwidth of “mode23” style ECU data-logging. It does so by packaging multiple data items together, so that a compatible client can process more than one data item per “read” operation. RAX Fast Logging requires EvoScan version 2.9.0023 or later. RAX Fast Logging covers 34 data items - see table on following page. “Regular” logging items can still be defined alongside RAX Fast Logging. RAX Fast Logging should deliver logging speeds four times faster than traditional “mode23” logging, for the simple reason that EvoScan can now read four “packaged” data items in one operation.
Installation Instructions for the RAX Patch can be found
HERE