DOH!!! Man, am I having a horrible day with posting! LOL
Yes Katana, you are correct. OEM timing for SR-motors is set at 15 degrees BTDC, and can be advanced from there. My roomate has had his 95 G20 (w/ many mods) timing set at 19 degrees for a long time, with no problems. Many others set it at 17...
I was visiting some friends in Orlando over this past Christmas holiday, and saw that they too have the lucky 93 octane fuel. Some of us out west are not as lucky... send us the good stuff!