OK, bought an XCal3, have a k&n now, borla exhaust coming soon. Probably a dual Aeroforce gauge setup and some wideband o2 kit (if needed). Is there a way to calculate air-fuel from data logging on just odb? Hints on setting the spark advance with just a stock (no analog, extra sensors) setup. Thinking about the pro-racer software to tune.. comments? Do I absolutely need an air-fuel deal like the LC-1 sensor? Thanks!
