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Old 02-20-2003, 09:54 PM   #1
AndyWRXWG
Scooby Specialist
 
Member#: 23784
Join Date: Aug 2002
Chapter/Region: MWSOC
Location: Mundelein, IL
Vehicle:
2005 M3
Tiag

Default How long for ECU to adjust to mods???

Just wondering if it takes a while because I've had my cat back for a little over a month and I've noticed that in the past few weeks my car has seemed to be performing much better. I thought maybe it was just that the ECU had adjusted to the new exhaust????
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