F55/F56 adding JCW tune with JB4?
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adding JCW tune with JB4?
I recently bought a F56 Cooper S, already came with a JCW Pro valved exhaust. The previous owner did not install the JCW tune yet. I will be add a JB4 to the car soon and wondering if it's even worth spending the money to install the JCW tune by the dealer? any input will be greatly appreciated, thanks.
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