BMW M3 Forum (E90 E92) - View Single Post

pbonsalb · 01-28-2012, 07:45 PM

You don't NEED a tune. The engine won't run rich. The WB02 are excellent and tell the ECU the precise AFR and the ECU has authority to adjust to the target AFR with or without cats. But a tune will help you make even more power.

01-28-2012, 07:45 PM	#26
pbonsalb Lieutenant General 7679 Rep 13,759 Posts Drives: 18 F90 M5, 99 E36 M3 Turbo Join Date: Feb 2011 Location: New England iTrader: (4)	You don't NEED a tune. The engine won't run rich. The WB02 are excellent and tell the ECU the precise AFR and the ECU has authority to adjust to the target AFR with or without cats. But a tune will help you make even more power.
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