The XDF is the current OSE_$11P , I put the 20.4 figures in red in as an example to clarify my question. Its all working fine, I just wanted to make sure I understood it correctly. The only parameter i cant get my head around is which one causes the drop in ignition timing (retard) when i shift from...

ok, so I guess you are saying the the advance bias is already calculated into the top table so zero is actually zero

pic 1) would it be fair to say that, as the table sits, (pictured) it will be having an effect on my overall timing of subtracting 20.4 degrees from my main spark table. ie 30 deg is 9.6

And in pic 2, the effect on my Main spark table will be zero?

TIA

04/29/2018 03:25:34 Scalar: Burst Knock - Coolant Threshold changed from 59.75 Deg C (0x85) to 151.25 Deg C (0xFF). 04/29/2018 03:27:34 Table: Spark - Coolant Advance Correction Vs CYLAIR changed. 04/29/2018 03:29:48 Table: Spark - Advance Vs Intake Air Temp & CYLAIR 93-593 changed. 04/29/2018 0...

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unfortunately it still does the same thing

thanks Wade, i'll check it out and let you know how it goes, cheers

see attached please

i zero'd burst knock and everything else i could think of today and it still does it

thanks for the reply. i have zero'd a few things but nothing to do with knock as there is no knock. I will try that tomorrow though.
thanks vlad1