I've set my initial timing at 12 degrees advance, but the factory specs are 6. I know setting the advance higher "wakes the car up" a little, but I've also heard people setting it as high as 15. I don't really understand the science to setting the advance that much higher. It would seem to me if the ignition happens when the piston is closer to top dead center and the compression is at it's highest point, the resulting explosion would be stronger at six degrees vs fifteen. And if the setting can vary so much between six and fifteen degrees, why use a timing light? Why not keep advancing until you hear pinging at high RPMs and then back it off? One last question. Is it better to advance or retard the timing if the engine is running a little hot?