7747 adding too much Spark - very confused

[Dr_Grip]

I got a very very weird problem - In the logs, I am seeing much more spark than it should accoding to my spark advance table.



This, of course, makes tuning rather difficult.

Any ideas what table I forgot to zero out?

EGR spark added? Should be of no concern as the EGR is patched off.

Any help, as usual, is much appreciated.

Log & bin are attached.

[ony]

its proble the amount add per 1000 rpm in the constant tables. or the highway spark adder.

[Dr_Grip]

its proble the amount add per 1000 rpm in the constant tables. or the highway spark adder.

HiWay spark should not be enabled at 90+ MAP. And isn't the amount per 1000rpm only active above 3600 rpm?

[lionelhutz]

You did add the spark advance patch, right?

[Skinny Pedal]

That's from your tune.

Attachment 10494

Attachment 10495

You also have PE stopping at 1200 rpm?

[Dr_Grip]

Thank you all!

I thought that with setting all values in the "PE spark added" table to zero I would get rid of PE? Seems like I missed one. Good catch, thank you! :)

Re - Spark Slope: The tool tip to the very parameter you screenshotted says it only starts at 3.600rpm. Is that true or not (some other tool tips are wrong).

You did add the spark advance patch, right?

Yep!

[ony]

I for got you had lean cruise for hyspark. I don't know about the adder I thought it cut off about 3500 so iam not for sure.

[Skinny Pedal]

Re - Spark Slope: The tool tip to the very parameter you screenshotted says it only starts at 3.600rpm. Is that true or not (some other tool tips are wrong).

Correct, it starts at 3600 where the spark table ends. I was just pointing out all adders you still had active. You would be adding roughly 2 degrees from that after 3600.

So from what I see you are commanding roughly 37 degrees based of MAP. In the first picture you are 3400 rpm and 39 degrees of timing. That should be only PE adder. In the second picture you are over 3600 and 42ish degrees of timing. That should be both adders, PE and slope.

[Dr_Grip]

Correct, it starts at 3600 where the spark table ends. I was just pointing out all adders you still had active. You would be adding roughly 2 degrees from that after 3600.

So from what I see you are commanding roughly 37 degrees based of MAP. In the first picture you are 3400 rpm and 39 degrees of timing. That should be only PE adder. In the second picture you are over 3600 and 42ish degrees of timing. That should be both adders, PE and slope.

That makes sense! So it slaps on the whole 5 Spark Slope degrees when I cross 3.600? That's weird, but I'll have to look out for it.

Again, thank you!