I getting ready to add these new Rinehart's True Duals to my '07 FLHRC, do I need to add a Fuel/Air programmer like the PCIII or the DTT-FIC to remap my bike or should I just take it to the dealer, I'm changing the pipes and air cleaner.

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Yes, you'll need to change the AFR one way or another.

 

You MUST change the air/fuel rate, do a search here tons of information and product choices.