HP Tuners Subaru

Modified on Wed, 24 Jul at 11:15 AM

HP Tuners has made relevant changes to the Beta software that all Subaru customers need to be using if tuning with HP Tuners. These changes were implemented on November 9, so you will need to have a version dated from this date or later.  The major changes in regards to Subaru applications are the following:


  • Cranking IPW parameters are mapped correctly
  • Low IPW units have been changed to a unitless ratio, as opposed to a percentage
  • Injector Latency axis has been fixed
  • The injector flow rate parameter [3064] has now been replaced with Injector Constant [2340], for the sake of consistency.


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