" bullshit, disconnect your o2 sensors and see if the car drives properly. that lean running condition is downright dangerous. I'd log on stage 0 (stock sim) and see if your AFR looks normal (14s tapering down to 12) "

" Only thing I can think of is o2 sensors or o2 sensor connection to the block. If your injectors or plugs were bad, you'd be misfiring or idling rough. It wouldn't be vacuum/boost leak because that would result in a rough idle and poor boost response but that doesn't seem to be your case. I'm just trying to systematically eliminate variables here, but it's difficult to diagnose this kind of thing without the car physically present. Your issue sounds like something that will be a real PITA to resolve, but best of luck. "

" bad o2 sensor or a sensor connection issue me thinks. do you have a piggyback installed even in pass thru mode or a dp fix?

PS running lean for sustained periods is BAD for your engine. "