You're better off running KTuner, which (I believe) has native EGR control, since it's based on the Accord ECU.
There are some threads on Insight Central where, I think it may be Julian Edgar? experimented with various degrees of EGR, and quantified the gains.
Edit: KPro does well with on/off controls but doesn't easily do tables for peripherals. You would need an external controller (Arduino would do it), or pick a good EGR duty cycle and just turn it on to that when outside WOT conditions.
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