regen braking ima

I've got the maintenance required light on, originally it was blinking upon ignition then switched off after awhile. I'm at 150k miles and the owners manual only goes up to 120k for suggested maintenance. The last time my IMA went out i tried having the codes read and nothing came up. The car...

Just curious if there's an optimal gear or RPM to maximize regen on the insight. I always thought I would get more regen (i.e more amps put back in the battery) if I use a lower gear with higher RPM when coming to a stop, but for some reason I actually notice more stopping power with a higher...