BMW 3-Series (E90 E92) Forum - View Single Post - lag in power when shifting 1 to 2 gear after installing after market parts

IllSic_Design · 01-21-2020, 08:17 PM

It's due to an old and aging fuel pump. I mean it might not fail if you turned the tune down but given you're not even running any ethanol and it's pretty low I'd say you should get a new or upgraded one.

01-21-2020, 08:17 PM	#27
IllSic_Design Colonel 2124 Rep 2,758 Posts Drives: 09 E92 335i Join Date: Jun 2016 Location: Northern California iTrader: (1)	It's due to an old and aging fuel pump. I mean it might not fail if you turned the tune down but given you're not even running any ethanol and it's pretty low I'd say you should get a new or upgraded one.
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