Got the car retuned with the STI restrictor pill installed. Very happy with the results, I asked for a more conservative tune that would work with California 91 gas without knocking. Got just that, boost is now smooth with no peak, the AFR is taken at the tailpipe so it is not accurate on the graph, AFR is where it should be when measured at the front o2 sensor. Spool is earlier than it was, and there is a lot more torque down below 3000rpm. I have nothing but good things to say about Kito Auto Sport, they didn't charge me anything for the second tune, or for the STI restrictor pill that they supplied and installed.