Is this the right data source?

In Group 01 - Engine, Channel 20, cyl 1-4 are in words 1-4
In Group 01 - Engine, Channel 22, RPM vs. Cyl 1 and 2
In Group 01 - Engine, Channel 23, RPM vs Cyl 3 and 4

Which of these are most useful? All 4 on one screen over time, independent of rpm, or a graph of RPM vs pull, or what?

How is this data used effectively?

You want ch20 with all 4 and also log rpms. This info tells you how much knock the sensor picks up and has to pull timing in that cyl. You want no more than 4-6* of pull in one cyl. If you have less, you can advance timing until you do.

So a graph of all 4 cyls against RPM is the "right" graph to get? I suspect you would do this on a single 2nd or 3rd gear run?

3rd or 4th would be best

So something like a dyno plot but with say four coloured lines, one for each cylinder.

Ok. this is a little off topic, but freegeek, what is that thing in your sig???

Josh

What sig, ok you just reminded me to delete it before I get another repromand. Its a little boost gauge thingy, just finished a dyno plot for it and MCPaudiTT it thinking up ways to keep me busy with new features for the next 5 years.

; )

Trying to keep the masses happy...

See this thread:

https://www.audiforums.com/forum/sho...d.php?t=108383