Why would you lean it out so much during high cam? Is that for both high and low throttle?
hmm thats a pretty nice explanation there. i pretty much knew most of that though, but still clears things up. but now, since hotter combustions gives u more power, how hot is too hot for our ludes? i think thats the one thing everyone with the VAFC is trying to figure out. once we know that point and not to cross it, we can maximize the engines potential<font face="Verdana, Arial" size="2">cuz a leaner, hotter combustion leads to more power.[/B]</font>
Not necessarily. Most cars make the most peak hp at AF ratios of 12.5:1 to 13.5:1. Especailly turbos. Some make the most power at very rich ratios of 11:1 and richer. However, it is true the leaner mixtures will burn hotter, and make more power up to a point. The problem is detonation and engine load. If the only way to remedy a detonation problem with a lean mixture is by retarding the timing, then you lose power. However, if you cool the combustion by adding more fuel (lowering AF ratio), to combat detonation, you can run full timing, and not lose as much power. Then the richer AF will make more power than a leaner AF.<font face="Verdana, Arial" size="2">Originally posted by smoothludey:
.... cuz a leaner, hotter combustion leads to more power.</font>