Quote:
Originally Posted by Z U L8R
more aggressive ignition timing does make more power, to a point. once you reach maximum brake torque (mbt) for a given rpm, that's it. advancing the ignition timing beyond that is just adding more pressure on the top of the piston before it reaches tdc, increasing your chances of detonation, and actually decreasing your torque when advanced too far.
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dave, I agree with you wrote here, but in THEORY the ignition timing that gives MBT could itself be a function of HOW much air is coming into the engine at a given RPM, as well as the air's temperature and pressure
Thus, in theory, optimum ignition timing at a given RPM probably changes when you change cams.
(I don't have ANY experience tuning cars, but this seems reasonable based upon my physical intuition).