[dlowman]

octane def can help alot if you have the supporting mods. But you have to tune for it to get the advantages. Especially on the newer cars. For instance.. I have an 04 Sti that is built up. I can only get about 420 whp (to the wheels) on 93 octane. But you throw race gas in there and I can get 616 Whp. I couldnt afford all that race gas so I went 93 octane with methanol being injected right before the throttle body. Which basically is like running 104 octane or so. That gives me about 592 hp to the wheels.
Dan