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Jb4 n55 hidden codes?
"The JB4 features a simple plug and play installation harness and built in deletion of hidden "tuner detection" codes"
This quote was from the burger motor sports site.
So my question is if I go in for service and I take out the jb4, will they not be able to detect it? My purpose is to protect my warranty. This is for a f30 335i
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