I put some hurt on more than a few at MMP with just the barely tuned Cyborg and certainly needed and could of used much more power. I was still hitting 130 on the front straight and 5 seconds faster than the national champ spec Miata record.
I will be running the EFR on track soon and spanking quite a few more
I had hoped to do so last Saturday but had the flue so install not done yet and it rained all day anyway, I am taking this car out on a rainy track day, not worth the risk.
After many track days, while traveling around, I might run in the rain if the only time I will ever be in that area and a bucket list track, then I will go out to at least put in some decent laps just to have done it.
If the EFR just cannot do what I want, which I expect it will, then I will look again at the GTX, both are incredibly well built systems