BMW 3-Series (E90 E92) Forum - View Single Post

nicklockard · 11-08-2016, 01:47 PM

I was surprised the 335D runs so rich. ALH series engined Tdi's used to run as much as 250:1 or more A/F ratio's on light load and 35:1 or more on cruising. I'm seeing 23:1 on cruise and 5-7.5 psi boost on cruise. I suspect a boost leak though.

11-08-2016, 01:47 PM	#118
nicklockard Second Lieutenant 43 Rep 281 Posts Drives: 2009 w/Nav; paddleshifters Join Date: Aug 2016 Location: Phoenix iTrader: (0)	I was surprised the 335D runs so rich. ALH series engined Tdi's used to run as much as 250:1 or more A/F ratio's on light load and 35:1 or more on cruising. I'm seeing 23:1 on cruise and 5-7.5 psi boost on cruise. I suspect a boost leak though.
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