Here's the stall scenario:
- Deep decel due to heavy braking.
- WB goes lean (15.8), injectors are around .5ms.
- STFT pegs (+34%).
- RPM is dropping, and WB begins to fall back. TPS is just above where idle would be. 20% or so.
- Injectors increase bw to 1.1 ms, WB comes down past stoich as idle speed is reached (800 rpm).
- Timing begins to advance to help catch the idle (0 to 32 or so). STFT is still at 34%.
- Engine speed goes to 450 rpm. Sometimes it stalls, sometimes it doesn't.