Don't want to sound too stupid, but we have been asking around a little about rigging up a really low bleed NOS setup, if it ever comes off I will post something up.
You don't have to dump big pressures of the stuff to make a difference, either something that was constant on at very low pressure, or a short burn for getting out of the chicanes and up to speed, forget top end, acceleration is where it is at, above a certain speed your moped handling is just going to become suicidal.
Can rig a battery for any required electrics though I would not of thought much is required, with a constant on, a manual valve could be used.
6 days to race time and counting...
Oh and played with total loss system, we weren't too impressed with the spark, but we may have it all upsidedown at the moment.