(Knock) Timing Beta Advance?

[Torque]

Would someone know what these tables are for?

[Torque]

Interesting ...

Where do you get the info from, I would love to look this up myself so you have less work

[Matt]

shoot me an email. it was from japanese doc which had to translate and work out what was going on. Majority of the info for the RB/VG info came from here

[Eric]

actually the knock tables @ 7FE0 and 79E3 are small 3D tables and as far as I have found out the values have nothing to do with the actual ignition timing or amount of degrees retard.

They seem to be some sort of knocksensor filter/sensitivity values..

the x-axis represents 3 preset TP-values (0, 32 and 64) and y-axis represents 3 preset RPM values 0, 1000 and 3600 RPM

like this:

[Torque]

Hi Eric,

I could not find these tables in the Nistune menu ..
The only thing which comes close to it is this ->
(see attachment)

Is there also a low octane table?


Also there seems to be some 'on the fly' mechanism to retard ignition without using the knock maps.
My ignition and knock-ignition maps are identical, but still the ECU pulls the timing ...

I still hope Matt will find the 'knock register' within the code of the Z32, so we get some knock display in Nistune.

Many thanks ....

[Matt]

I messed up the lookup in that document

Should have been these ones:

HIGH_TIMING_ADVANCE_BETA,&H7E70,16,1,16,1,Beta Timing vs RPM
REG_TIMING_ADVANCE_BETA,&H7E60,16,1,16,1,Beta Knock Timing vs RPM

7E70 0D70 KLLHAD At the time of ratio BETA advanced angle ﾘ ﾐ ｯ ﾀ ｰ 1×16 HNREPM:400rpm Deg ** All 00s

Andrew - Those tables eric mention are here (same description as above jap document)

KNOCK_LIMIT,&H79E3,9,1,9,1,Knock limit (TP 0, 32, 64, RPM 0, 1000, 3600) (High)
KNOCK_LIMIT_SECONDARY,&H7FE0,9,1,9,1,Knock limit (TP 0, 32, 64, RPM 0, 1000, 3600)

These are in the base address file

I just dont have a 3D table class for entries like this coded up so just displaying flat at the moment

[Torque]

Hi!

Yes ... I found it myself in the meantime
Would you change the representation in Nistune to '3D'?

Also looking at Eric's table how would I translate your flat table to 3D?
(Do I follow to the right, or down?)

[Matt]

RPM 0 [1 2 3]
RPM 1000 [4 5 6]
RPM 3600 [7 8 9]

[Torque]

Alright ... the to the right