its not about the octane increase. like i said, it would take quite a bit to make a difference... and that difference is only a few octane points.

buy xylene. you can get it at sherwin-williams for $36/5gallon can. the more you buy, the bigger the discount. available at about ANY sherwin-williams store... its likely that S-W is more common than a race-track pump. if you want, you can mix it in a 33% mix w/ a little bottle of MMO and get 106 octane. or you can run it straight and get 117 octane.. you can easily monitor your fuel level... but untill you put a tank level guage in your alky resivoir, youll never know how much is left. id rather not find out the hardway that im out of alky... hence knocking and pulling timing. no knock is better than some knock.

It its just putting yourself in a situation that you dont need to be in. save that money and invest it in some larger injectors or a nice FMIC-tercooler and hard pipes. that would be the responsible thing. these little additives and things that cause dependance like nitrous and alky/h20 injection are just problems waiting to occur. its alot safer to run low on gas and say "hey, i better stop at the Shell" than "Oh shit! I better let out of it and let this ricer with nitrous win... its knockin like a Mofo. I bet my damn alky tank is empty. Goddammit, i KNEW chris was right!"

seriously, dont create dependance on an item/product/chemical that you dont need to.

If you are knocking, find out why. Fix the cause of the problem, not the result of the problem. Even with alky, youre not resolving the issue of a highly heated intake charge. hell, even a larger fuel system would just take the place of alky injection. the REAL solution is to get a bigger turbo that is more efficient at the power leve/airflow you desire or a bigger intercooler that will counteract the inefficiency of your turbo.

besides, i NEVER ever said alky wasnt proven. i Know people have gone fast with it... but people have gone fast with 2.3L CRX's, Log manifolds and Dry shots... but that doesnt mean its a good fuckin idea. your money could be better-invested elsewhere.