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Old 11-05-2012, 05:18 PM   #43
Scooby Specialist
Member#: 209172
Join Date: Apr 2009
Location: Omaha, NE
2012 Impreza CLL


Originally Posted by ocellaris View Post
Anyone know if this updates all of the ECM code to a new version or just applies one specific fix?

I have one of the first 2012 Imprezas made, I never got the ECM update to address wonky acceleration in the early cars. And I never got the update to reduce the engine braking when going downhill...
Both of those were limited to when the vehicle was assembled. I pre-ordered early and only one of the changes was needed. Can't remember which. One was for the ECU and the other for the ECM.
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