| Timing- Less advance reduces the max pressure seen. Also then reduces power. More fuel/less air- Richer mix won't burn as hot so pressure is reduced. Less pressure = less power as before. Higher octane - Resists ignition allowing the spark to be advanced and the mixture to be leaner. Both result in higher pressures and more power. Water injection - Cools the mixture which allows more timing and spark advance. Steam generated by combustion can also add a little power. There may be a few other options I can't recall but these are the biggies.
KKROFFTNow occurs everywhere, simultaneously. But it doesn't have to be experienced the moment it happens. Every now that ever was is still exactly when it was, when it was now.
Then, in terms of perception, is nothing more than all the nows that are no longer now. Thus, the difference between now and then is when. --The Waystoppers Users' Manual 
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12:54:00 03/17/14
