Quote:
Originally Posted by DallasCajun
I was wondering the same thing as the JB4 is over $300 more expensive than the RaceChip. I had a RaceChip in my F85 X5M and had no issues so I’m leaning that way for the XM. Just planning to get to 1,200 engine miles first.
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I do trust racechip more just because
r33_RGSport codeveloped it and has had it on his vehicle for months now problem free