Knock Retard

[NAH]

Last night, I logged a short run which recorded 3 instances of knock (see below).

http://www.eneily.net/index_files/Log%2026-01-07%20a.jpg

http://www.eneily.net/index_files/Log%2026-01-07%20b.jpg

http://www.eneily.net/index_files/Log%2026-01-07%20c.jpg


I have checked the spark & VE tables & both seem ok. Could this be false knock?

Also, GM.DYNCYLAIR_DMA is showing a zero value apart from when knock occurs. How can this be, surely there will be a measure of air recorded when the engine is running.

PS: I have B6216 Burst Knock Retard set to zero.

Any ideas??

[NAH]

I guess this was false knock. I guess I also need to dump PID SAE.MAF as I am running MAF-less.

Another question though, the value for GM.HS0211 (3rd from top left - yellow) appears not to be switching. I think this should be working through the LC-1. The RED calibration LED is 'solid', so |I thought all was working OK. The AFR is reading correctly (as verified by EFI & the LC-1 guage utility via the serial connection. I am running in constant Open Loop. Anyone see a problem here?

[joecar]

If HO2S11 does not switch, check:
- what the actual AFR is,
- reprogram the transfer function of the LC-1,
- something else.