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Default N54 with JB4 gen5+vrsf and get 30ff on map1 only - 04-22-2018, 09:29 PM

Hi, I am having a strange issue that been bothering me for a while. My 335i has JB4 gen 5 and I also have a BMS DCI & the vrsf intercooler. It driving perfectly fine when on map5. But if I driving on map1 and when rev over 4500rpm I will get CEL and after I scan the code, I got 30FF. And my car don't have any wasgtegate rattle and this have been quite a while. So is that normal because I have the upgrade intercooler? or the intercooler hose is loose?
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