while the volume of toluene and/or xylene needed to raise octane appreciably is too large to be of use in an ADI rig, there may be another alternative:
http://www.torco.com/cart.php?m=product_detail&p=12
http://www.torco.com/index.php?fusea...ials&test=acel
basically torco concentrate is a bottle of MMT solution, which is another organometallic compound similar to tetraethyl lead, and has a very powerful anti-knock effect.
http://en.wikipedia.org/wiki/Tetraethyl_lead
http://en.wikipedia.org/wiki/Methylc...se_tricarbonyl
long thread about it on nasioc:
http://forums.nasioc.com/forums/showthread.php?t=420798
adding one full 32 oz can of torco to a tank (ie 14gal) of 93 octane will raise it by 8-9 points. most importantly, since the torco is not being consumed when the ADI is not squirting, you don't waste it just idling and motoring around quietly, and you use MORE of it when you get on it. ie.. if you consume 32oz of torco in the space of one tank full of gasoline, you're getting a LOT of it when your ADI is active. you wouldn't want to burn it that fast.
it is my intention to work on an alchy/water/torco witch's brew once i get my ADI rig up and running well. my only question at this point is how much alchy i'll need in the mix to keep the petrol-based torco mixed and not settled out of the water. if i have to run 100% meth, so be it.
ken