Just to be clear, if you're running stockish boost then sure you can lean it out and make a little more power.....but who stays at map 1? My tuning experience comes from actual tuning ECU's, not point and click like a JB4. I define the AFR curve. I've also seen a ton of logs from Ecutek tunes like AMS, Racebox, etc. so I can see what their target AFR is. On this platform, when you start trying to really up the boost (~17 psi and up) you're going to want a richer AFR or you will neuter your timing and have a higher chance to pick up knock. Rich knock is also a real thing too, but we're not going to discuss that here .Stock ECU tries to deliver a richer mix of high 10's low 11's. The JB4 fuel wires main function is to lean out the mix to a target of low 12's. BMS tuners believe this delivers more power but is still a safe level. I have tons of respect for DDNSpider (as you can see I copied his whole JB4 setup and even his pedal tuner). He has debated for a richer AFR than the BMS targets. When I reviewed the logs you posted, it looked pretty typical stock ECU to me.