I've found that I can get very good economy with 0 AVCS and a bunch of advance OR moderate AVCS and much less advance (~5 deg less). My running theory is that the 0 AVCS setting is self EGRing and the extra timing is needed because of the charge dilution whereas the moderate AVCS point has better VE and compression. So far the economy peak is at 6.8L/100km at 105 kph
Your theory is right. Some degree of retard is built in cams (I believe somebody from Cobb - Cristian maybe, was explaining how AVCS works - can't find link right now).
Street Tuner/Access Tuner Race Discussion Thread
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Your theory is right. Some degree of retard is built in cams (I believe somebody from Cobb - Cristian maybe, was explaining how AVCS works - can't find link right now).
Bob