octane booster

[Walters Chris]

>~>Hi guys. I *think* I am running out of octane in my BMW 530i - I have 
high
>~>compression pistons, and the car is choking at high rpms. Have checked 
most
>~>of the obvious things like fuel pressure, filter, etc.
>~>
>~>I read here that xylene or Toluene is the way to get more octane. How 
much
>~>should one add to each tank?
>~>
>~>What is the minimum octane I would need with 9.5:1 pistons?
>~
>~If low octane gas was the problem wouldn't you have detonation over the
>~whole rpm range? But b4 you do anything radical tank up with some racing 
gas
>~and see what happens.
>
>With the new gas I have found that adding Toluene to my gas reduces
>detonation.  I started with a 10:1 mix of gas to toluene (118 octane
>using the analysis method I believe), but I have found that a quart
>for 10 gal 92 octane fuel is sufficient to bring the electronics loop
>back into operational range for casual driving conditions.
>
>What I think happened is that the new gas here w/o the octane boost
>moved the high rpm ignition advance required beyond the range of the
>electronics and I began detonating at ~4500 rpm.  Bringing the octane
>up lowered the advance required curing detonation.
>
>Don't use xylene at home.

Next I'll hear someone's putting hydrazine in their tank before a match 
race! No thanks -- I'll stick with avgas.

>Hi Snake!  Fancy meeting you here!

cross-listed and twisted as always. . .


Snake
no cool Fords yet, one cool Dodge