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if read is greyed out the ecu tune was read inot oft correctly. If the read is greyed out it means the oft onboard databse does have required tune.
see the oft tips link below. go to oft downloads page, download and unzip tune pack. Use openflash manager software (same page) to upload tunes to oft. Look at ECU ino screen or diagnostics and oft will tell you your calid like ZA1JF00C or similar
IF you removed your second 02 sensor you should have got a bunch of CEL codes, did you remove it or previous owner ??
OFT tunes are not setup for rear 02 sensor removed
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