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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > AFR imbalance is gone!



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      04-30-2011, 12:13 PM   #23
Joshboody
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The difference in flow/VE, due to gunky valves, is more aparent at higher boost, rpm. Maybe the DME can't adjust for large variations due to resolution or adjustment limitations. 1 bank could have been a lot worse in flow/variations between cylinders. If this was the case then the problem bank would have been the rich side I guess... I don't know.

My interest is the aftermarket matching the stock widebands, as this shows the accuracy of Shiv's calculations.
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