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KoolBRZ you definitely need to adjust the timing where we have increased DI % from stock cal
Everytime you flash are you making sure to relearn the background noise of the knock sensor by doing a partial load sweep from low to high engine speed? Normally you start at 2K rpm low load and slowly let rpm build until 6K to 7K (not WOT). This helps ECU learn background noise caused by valvetrain and other components. Helps ECU call knock more accurately and overall a consistent knock detection instead of too early or too late.
My only concern with flashing is ECU loses the chain stretch information. This is usually accounted for because when the company flashes a cal at the plant the engine will learn the relationship between crank and cam and then on wards it will use this relationship to estimate how much the chain has stretched. For example initially when the chain stretches a lot when new the cams can get more and more delayed in actuation or cams can get retarded. Some OEMs can use the chain stretch info to position the cam after discounting the stretch. What I mean is physically the Intake cam could have moved to 42deg instead of 40deg retard. What Ecu can do is move the Cam to 2deg more advance thereby engine is actually getting the needed 40deg instead of 42deg.