f4i backfires?
#11
I have the same problem as cbrballer. I have a power commander and m4 high mount exhaust. I have a california bike and recently noticed the o2 sensor was loose. I retightened and noticed the same pop on the up shift if riding hard along with the deceleration. I remapped my bike with another map. Should I try another map? Or loosen the o2 sensor? Any ideas would be great.
Thanks
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