from what i belive,
nitro decreases the flash point of the fuel and allows it to ignite at a lower tempreture.
in most cases this means that it will advance the thermo ignition timbing and give more power up to a certain degree.
to achive this you need to let the rpm's accel to get this "bonus power" otherwise you'll get knocking.

i learnt somthing too
i have been running 2 part-25:1 gas/oil ratio and 1 part-10/10 nitro.
so you mean i can use straight gas and just the lube in the nitro is enough?

shaun