Stumble at 6psi plus burbuling
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I am trying to figure out whats causing a stumble in my cars above 6psi.
I have reduced timing to a level I think is really conservative but I am not sure. I suspect the fab9 coils but maybe that's cause it was the last thing I changed. I have good fuel pressure at idle. I rechecked the timing with light. When driving at low throttle its fine but when boost and rpm climb a little. It misses or stumbles I don't know if its knock almost feels like a rev limiter or something. Please see msq timing map and log. I appreciate all the help. |
Can timing be too conservative. Seems like retarding the timing more just made it worse. I noticed with a timing light and it set fixed at 10 it still drops to like 6 at high rpm on timing light.
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So changed back to the 04 coils removed the fab9tuning cop which fixed the issue.
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