No issues with FW 3.0 for me, in fact it's a significant upgrade. You essentially get another TC profile that you can switch out attys, even when they're not cold. For example, I have SS on a Velocity rda and a Aromamizer RDTA on the M and SS profiles, respectively, and I can switch them out even when warm.
As another data point, I'm using 316L SS dual coils, and TCR of 125 nearly matches the SS profile. Whether it's because of the mod or because of the SS I'm using, 92 was far too low for me.
As another data point, I'm using 316L SS dual coils, and TCR of 125 nearly matches the SS profile. Whether it's because of the mod or because of the SS I'm using, 92 was far too low for me.