yup, instead of using leaded gas or any nonsense, if you're looking for high octane for racing and run enough compression to make it worthwhile... pay the money and get trick fuel.... even if its $7 a gallon... i used to have a VW bug with so much crap done to it that we took it to a small private airport and fueled it up with 167 octane aircraft fuel, that stuff was potent, but it was required when you're putting out 400+ hp out of a tiny little 4cyl motor.. too bad someone stole that car, it could keep up with the 9sec cars