Nitrous
how long do u think your engine will last before send the piston through the head or make it detonate sening shrapnel everywhere. plus your engine would run extremly lean so u would have to richen it somehow a normal engine run
@ 1 part oxygen to 16 part fuel i think so with nitro u probally would be getting it up to 10:16!!!! personally i think that sticking a couple of D size rocket engines on the back with an electronic switch would be more benificial not to mention lighter!!