One thing to keep in mind: when the ECU detects more air that’s been metered, it will increase injector pulse durations until the o2 sensors are happy again.
If the groove waveform does indeed end up bigger/stronger, you may need to intervene electronically at the o2 sensors with an EFIE.
I have yet to put mine on, but since I relocated my MAP sensor (which I’ve also modified with an enhancer circuit), my mileage displayed in the instrument cluster has gone down, even though in reality with pen and paper it has stayed where it was or even gone up slightly (which was a very pleasant surprise over the winter, when it usually has dropped). I fully expect the EFIE to correct the display, or further enhance the gains I’m seeing.