I did a tune on my friends HHR and when I clicked the histogram buttom all the numbered tabs are said to not be supported. i want to log the knock retard but that doesn't seem possible now. What tables can I use to log his KR because the Main spark - knock retard table isnt available. I haven't checked on another vehicle yet but before I switched to 2.23 I had 2.22 and I was able to log the Main spark - knock retard on my girlfriends GTP, i just need to plug into her car again to see if I can still get that table. So with that being said what is the fix for this or what table can I use instead.