question on knock thresholds

ikilby · Post by **ikilby** » Thu Jun 03, 2004 12:29 pm

Hi Doug,

I have attached a very short datalog from my car during motorway driving.

Can you tell me why the knock threshold changes at constant speed.

Also regarding Wideband O2 sensors and US k-pro, I think I will be seeing you at CPL on the 18th to try and solve that one!

Anything I will be missing from the seminar on Sunday as I cant really do another day out.

Regards
Ian

Post by **Hondata** » Mon Jun 07, 2004 2:41 pm

Your o2 sensor does not appear to be functional.

The ECU has two different resolutions for the knock level (and threshold) and switches between them under different conditions. At around 40 kpa absolute pressure and 2500 rpm it will change resolution.

ikilby · Post by **ikilby** » Mon Jun 07, 2004 11:36 pm

Thanks.

So see you on the 18th at CPL to fix this !

Regards
Ian