Ignition timing mismatch - Solved

[gips]

Hello,
i am having the following issue with my timing. Around specific area in the table the timing seems to go out of sync with the table and for some reason the EMU adds a few degrees of timing. This does not happen every time. I am concerned that this can be quite dangerous, if it happens under high load. As you can see it already resulted in knock under low boost. Its visible on the knock graphic below and also i heard it quite well on the headphones. It was not hard knock, but it was there . Can someone point me where the issue can be, or should i simply remove timing in that area for safety. I have triple checked the base timing on the car and its spot on. Also i suspect , if it was mechanical issue it would have been present everywhere, not only on specific area of the timing map. Any help is appreciated.
Forgot to add. Engine is 3SGTE gen2. Small CT26 turbo 1.2bar of boost. Pistons were changed to Wiseco due to broken ringland on a stock one. No other mods. Also screen is from a 2nd gear pull.

Edit: Ok after some more testing i can definitely say that this happens, when the throttle is opened suddenly and it takes around 0.2 sec for the timing to sync with the table. I was able to reproduce this every time although the timing difference varies from 1 to 4 degrees.

Problem found: Seems by mistake i have added 8 degrees in one of the cells of the Acc. Ignition table. And because it was only one cell i didn't see it , when i checked it first time. So all is fine ignore this thread.

[Welshman]

glad you found it . out of curiosity what are your knock sensor settings , mine rarely goes about 1.2 v

[gips]

Here they are:

knock frequency: 6.64khz
Gain: 0.111 - I prefer lower in order to run lower integrator, but there is no lower setting.
Integrator: 360uSec


I am using the stock 3SGTE gen2 sensor, not sure, why some people find it noisy, for me its pretty fine. Yeah i know, its hard to distinguish light knock and normal operation with it, under certain situations, but the sensor itself shows them quite fine on the graph
Light knock is usually between 3 and 4.5v.
Hard knock goes over 5v. In certain situations i have a very light knock under cruise due to high timing in low RPM, however i am fine with it, its usually between 50-60km on 4th gear, or 75-85 on 5th. I rarely cruise in that specific range for too long, so i prefer to have the added power. Let me know, how the settings look from your side if you test them.

[Welshman]

i have the same freq with a gain of 2.00 and intergrator of 100 usec but im using the round more modern senser , i rarely see a knock senser value over 1.3

[gips]

That is strange , it seems you cannot adjust the settings to come up to around 2.5v. Maybe your sensor should be calibrated differently. Maybe try to induce a bit of knock like putting 40degrees of timing around 70kpa/2000rpm. And then try to adjust the frequency like putting 13KHZ or something and see how the voltage reacts. I have seen some wideband sensors that need to be put around this frequency unlike the closed loop ones, that should be as close as possible to the 7Khz.