I have a cts-v and with intake, headers and exhaust I was seeing the same .85ish lambda at WOT. I just thought it was mainly due to mods and the MAF...
I'm noticing very little evidence of knock on the physical cylinder number two spark plug. Do you guys go in and change the sensitivity only on that...
There's not much you can tell from that data log, other than it runs until it doesn't. It does look like it runs out of fuel, but without logging any...
The breakpoint is around 2009 to 2009.5 depending on the platform. Look at your Injector Flow Rate table - if it has a 63lb limit it is an early one...