I'm just getting this beast on the road, and I can't seem to figure out this issue. After a while, say maybe 15-20 minutes of warm up, my car starts to read full lean. I can add fuel to the point it wants to stall, and that sensor still reads lean.
Starting from cold it behaves as expected, but at some point that stops. Do you think it's a leak in the intake or exhaust that open up at operating temp? I've looked for both, but haven't had any luck.
Do you think it's just that AEM controller is junk?
I'm at a loss, any direction would be appreciated.