2011 CTS V, FBO, cam, full fuel system, E85
During a pull today the car bucked violently so I let out. Luckily I was logging when it happened. Once I got home I checked the log and saw that:
- Cylinder airmass drops suddenly to zero
- Ignition timing shoots up to 54*
- Injector duty cycle drops to .5%
All this happened at once and only for a split second before returning to normal.
Car has been driving perfectly up until now. After the pull, every now and then I would feel the car cut out like a misfire but I couldnt see any indications on the log- just the wideband go lean for a second before returning to normal.
Any ideas on what to look for?
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File
Final.hpt