SOLD
Now that I sold my STI, I don't need my can of Torco anymore. For those who have never heard of it, Torco Accelerator is an octane booster that actually works. 1 quart of this stuff added to 10 gal. of 91 octane boosts the octane rating to around 102, verified by independent laboratory tests (by customers on their own, not the company). I used it with a 100 octane STU-legal tune on the STi for about a year with no problems. It worked just as well as Sunoco 100GT, but was MUCH easier to live with and use, plus it was cheaper. Just to be sure, I usually ran my tank down to a bit less than 10 gal left, and added 1 qt.
If you buy this stuff one quart at a time, it costs about $25 a quart. I bought a 5 gallon can, and I have about 3 gallons left. A new 5 gallon can will run you about $250 including shipping from the cheapest place I found:
http://www.jbsblownc5.net/products.html
I'm asking $100 for what I have left, which is 10 or 12 quarts. Bought one quart at a time, that would cost $300. At less than $10 per event, it's definitely the cheapest and easiest way to get 100 octane fuel.