mercredi 11 février 2015

Light acceleration hesitations, cannot run JB4, shaky idle

-For the past 3 days, I cannot floor my car, the second I go past 10 psi a check engine light lights up and is auto cleared, and JB4 switches automatically to map4 (stock)



-When Im stuck in traffic for a while my idle gets really shaky, issue seems to only happen when in a Jb4 map (not 0)



-When accelerating very lightly the car shakes and bogs (pretty hard to describe) then if I accelerate more its fine.



-Today the code 2C3B Lambda probe in front of catalytic converter, not plugged, showed up in map 0



-Please bear I did not have time to check anything as I get home and its very dark and its about -20 deg C over here.



-I ordered plugs as its been a while I changed them 35k kms(oem boschs), cant hurt to change em.



mod list is:

2009 335xi

-Jb4 usually in map5

-BMS backend pump flash

-catless downpipes

-runs on 91 octane all the time



Any ideas?




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