octane booster

[zipdrive]

anyone know of any octane booster additive that does not contain methanol based chemicals?
basically i'm looking for straight octane level raiser not "increase horsepower" BS that most claim.

i'm still waiting for replies from few brands...i think most of them are reluctant to reply when i specified that it is going to be used with nitrous oxide system..

[Luke]

any good?

http://www.ozrace.com/