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Old 02-13-2013, 09:00 AM   #95
Marty19
Registered User
 
Join Date: Feb 2013
Location: Welwyn Garden City, UK
Posts: 12
My Ride: 2004 330 ci Vert
Does anyone know if its ok to leave the OBD2 plugged in all the time? I notice there is a red light on even after the ignition is off.

I guess my questions are:
1) Will it damage the ECU by leaving the OBD2 plugged in all the time?
2) Will the battery drain be significant with the engine off?
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