Can someone tell me what the CAT ECU flash upgrade is and how I perform it?
07-22-2008, 08:04 AM
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Can someone tell me what the CAT ECU flash upgrade is and how I perform it?
I just changed out my pre-cat O2 sensors and still get CEL for the pre-cats. Someone mention if I had done a CAT ECU flash upgrade and I have no idea what that is.
Any info is greatly appreciated.
Any info is greatly appreciated.
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