Originally Posted by
donf
I might have found a little clue for why the numbers in the data logging do not match up with the data log. The od TP5 v251XDF supposedly compensates for initial advance changes. The adx does not, reasonable since there is probably no communication between the two files. "Change last number(offset) to initial advance of engine, for correct display." Still adding a flat 9.8 to the log files do not exactly correlate see the pdf info posted on post #91 so "correct" may be wishful thinking. So far my OTC scanner has come the closest to recording the most believable timing numbers, especially when the main timing value goes to retard when there is a low total value on the main table and a high initial advance. If you see a crazy number in $od logs it's probably just the retarded areas, but the fact that it does that makes me think other areas may not be quite up to par either. One thing I am wondering about is the log file for the xdf. If the main timing table auto compensates for any initial advance on the chip, try changing it and only that from 0 to whatever you choose. Now look at the log file. You will see the change log made a note for the initial advance change but no timing table changes were noted. If I am understanding how this particular xdf works it should have knocked the value of the initial advance off and rewrote the value to the bin and logged the change too?
With emulation, it's not possible to make changes while running, correct? I had chip emulation set up on the dyno, but the one time I tried to push the change to the chip with the van running nothing changed then something happened and the file was corrupted the next time I tried to start up and would not start at all. It would be handy if that would work for changes on the dyno especially for part throttle timing.
I put off pulling the valve covers to re-check lifter preload hot and running instead of the static set. The one side is a huge pain in the van, but most everything else so far checks out or is fairly close to a reasonable value. So I guess that is today's project.