[Ashlandchris]

stock 1 gives you all your normal settings (for/rev/brake), battery voltage, temp cut out etc but then also enables you to add either boost or turbo

So, DRRS = each increase setting gives more oomph across the range
as does hybrid boost

hybrid boost maximum gives you a turbo effect - car accelerates normally and then at full power it can give you an extra boost - you can programme a delay (i.e. I use a 0.5s delay so that on a straight if I'm at full power, after 0.5s a boost cuts in to give me a bit more top speed)
As I've said, I use a 13.5t and this function is great.

Best bet is to drive one meeting and see how car feels. If it is nice but you are aware of a lack of speed on straight then try the boost maximum.
Enables you to run a tamer, more drivable motor but without holding you back on straight.
PS - in the PC interface, click on "hybrid boost" on screen when running the stock1 firmware and you can select your motor turn and it gives suggested settings