Originally Posted by
Spray-Cam Hell-Ram
There are quite a few tables that will have an effect on cam chop. Makurfab explains the logic pretty well using the Tennis analogy. Personally, I have the proportional P/N table set at -40 in all negative inputs and +40 input in all positive inputs. And if you have an otherwise pretty stable idle to start with, then you can also get away with doing the same on your proportional drive table as well to get a good chop at a light. (I have -35 and +35 in the drive table). And as already mentioned, Integral and Derivative tables control idle speed. And have to make sure to have -64 there in there in the last column or two in the startup table. But what a lot of people seem to miss is making sure they have timing in the minimum base table set low enough in the idle area to support a good swing in timing. For example, if you have timing at start-up set at say 10-12 degrees but your inputs in the idle area of the minimum base table is, lets say 5, then you are only going to have a swing in timing from 5 to 10 degrees for your idle whereas a spread of 20-30 degrees in timing, from my experiences anyway, will enhance the idle chop effect.