Interesting stuff Jason... I had wondered about when the advance starts working and how it reacts to throttle position. I assume that is one of the things that is altered with a performance pump build, like Giles etc.
I agree, I would not think about disabling the dynamic advance. I think it is one reason the rotary-pump VW engine designs work so much better out of the box than the Mercedes with inline pumps. A non-turbo D24 is 2.4 liters and makes 82 HP... a non-turbo MB OM616 (240D motor) is the same size but makes 67 HP with an inline pump. The VE design is pretty neat once you get to know it, though of course the Mercedes inline IP is happy pumping river mud, while the VE pump is a little more picky about fuel quality and filtration...
Mike, I usually set mine to around .92. I would not go any higher than about .97 unless, as Jason said, you are using a lot of air and trying to move a lot of fuel. On a stock non-turbo motor, I doubt you will see any advantage beyond about .95.
__________________
86 745 D24T/ZF 345k lifted 2.5"
83 764 D24T/M46 155k
|