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ECM recalibration needed for slip on mufflers?

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Old 09-26-2011, 06:48 PM
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Default ECM recalibration needed for slip on mufflers?
Do kneed to have the ECM remapped if I install slip on mufflers with no other mods to my 2011 Fatboy? Should the ECM compensate for this change with the factory calibration? Thanks.
 
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Old 09-26-2011, 07:36 PM
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No calibration needed for slip-ons ONLY
 
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Old 09-26-2011, 08:19 PM
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Thanks. I have heard different answers but this makes sense.
 
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