Not Ranked
I usually run with Lucas Octane boost + Chevron or Shell premium except for this last tank, but have noticed the problem in the past just that now it is much worse. Could be tied to the winter gas blend here in the SF Bay Area. Car has been spec'd to a "T" by Craig over at Top of the Hill and may have to take it back in for a check. Will try some of the quick fixes suggested herein and report back.
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