12-03-2017, 02:12 PM | #1 |
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Quick question
I have installed jb4 on my m5 and I still have the check engine light on I wonder if I have to do something on the jb4 please let me know
Car has catless downpipes and gtc meistershaft exhaust |
12-04-2017, 02:13 AM | #2 |
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I believe JB4 no longer clears the CEL, some sort of legal issue. I believe general consensus is you should do a flash tune if you want the CEL gone.
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