Originally Posted by TunerToys

I really wasn't going to get into it, because it is your for sale post after all. But since you ask....

My feeling is this.... The reason to retard is to avoid detonation/pre-ignition. The higher the boost level, the more potential there is for detonation, more so than just by RPM level alone. Since you could be at many different RPMs, and still not be boosting to the level needed for retard, then retard by boost level would seem a much better way of doing it, like the BTM type of solution.

For example, if you are running along at 65MPH, at part throttle, you may not be at full boost. But since the SITC is reading RPM, the timing is being retarded when it doesn't need to be. Sure this may not be such a terrible thing, it just seems more correct to retard only when needed. Retard by boost seems like a more accurate way to do it.

Craig

Originally Posted by dragmanEX

well, i'm not gonna say it's better than that but i figured there were still forum users using the afc hacks as well. plus, the afc hack only advances timing where leaned out. this can be used to advance timing as well. just think, you can stretch your curve out past where the stock curve flattens and create more torque.