[BlueCrabMafia]

Went to run errands today and saw my check engine light had come on. Pulled my code reader out of my trunk roadside bag and it read P0171 which is for a lean condition.

I installed an Injen intake last week, but the car has been driven for at least 500 miles with it on and no issues. It's super cold today (13 degrees with a windchill of 2 degrees). I also had the turbo oil line recall done last week.

This is on a 2012 N26 328i. Any thoughts?

[hakisalapaki]

I have yesterday the same warning light.I have use racechip for 2 years,without problem.
The BMW service says there is an air/fuel mix error.Light can be off during drive,not a serious problem.

[Domotron]

probably not a big issue since n20/26s run somewhat lean from the factory, having intake sucking up crap ton of cold air will probably trigger it