Discussion in 'Police Package/Specialty Service Discussion' started by mp_tx, Apr 19, 2017.
What a huge difference
Speedo is off more than I am comfortable with. Reads 5mph low at 60 and 8 mph low at 70 with the upgraded combo. Looks like most dealerships charge one hour of shop time plus a $50 download fee to reflash the computer to the new wheel size.
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