2011 harley street glide slip on mufflers vances nines?

hi i have a 2011 harley street glide i put vance and hines slip on mufflers on my harley. it runs great no missing no back firing just like the day i got it. do i still have to remap the motor.the paper from vance and hines say i dont have to. i know there is some harley guys that know it all. so if you can help me i thank you. 76 and still riding.2011 harley street glide slip on mufflers vances nines?
If it ain't broke. . . .

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