Toluene raises the octane rating of gasoline. The only way this will increase performance is to allow more advanced ignition timing without detonation.
The
MSDS data on toluene states:
"Toxic by inhalation, ingestion or by absorption through skin. Serious irritant. Experimental teratogen."
Acetone lowers the octane rating of gasoline and will hurt performance. It will also be hard on seals and rubber parts.
Lew