Critique my datalog please, Random RPM spikes and Gair
 

Here's a long datalog from tonight that I'm hoping someone can take a look at and give me some tips. I had tunerstudio running veal while datalogging btw so you can see as I went along the AFR was getting better. I can't seem to figure out GAIR and as a result my AFR seems to change a bit with temperature, and Also I'm still at a loss as to why I am having random rpm spikes which I have tried everything to resolve short of ditching the CAS.