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

bryce · 08-15-2011, 05:23 PM

The dpfix just modifies the secondary oxygen sensor values. The secondary o2 sensors have no effect on the engine's afr value, they just measure the variance between the primary o2 sensor afr values to make sure the cats are doing their job

08-15-2011, 05:23 PM	#3
bryce Banned 103 Rep 3,177 Posts Drives: zhp 3-pedal Join Date: May 2010 Location: texas iTrader: (22) Garage List 2005 bmw 330ci zhp [7.34] 2008 bmw 135i- sold [6.00] 2007 bmw 335i- sold [7.14]	The dpfix just modifies the secondary oxygen sensor values. The secondary o2 sensors have no effect on the engine's afr value, they just measure the variance between the primary o2 sensor afr values to make sure the cats are doing their job
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