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ECU serial # 2C0-8591A-21

qbaley69@gmail.comqbaley69@gmail.com Posts: 2Verified User
in R6

I have a 2007 R6 with the -21 ECU where FT only lists -20 and -31(CAN). The -21 superseded the -20 but I don't know what changed. Is there a problem with downloading a tune with -20 on a -21 ECU?

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