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Old 11-15-2019, 03:39 AM   #2
itsnotanova
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Join Date: Jul 2013
Location: Bastrop, Tx
Posts: 2,451
Sounds like a ROW tune. ROW tune turns off sensors to the rear O2's and secondary air injection. As far as I know the only way you can reprogram an ECU is with a PIWIS or PST.
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