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840 or 808

2333 Views 7 Replies 6 Participants Last post by  2048 Demon
Had my dealer install the crate PCM and high octane button. When I put 100 octane in or 93 octane in, it shows up in blue light that 840 high octane activated. Why would it show that with only 93 octane?
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.... and once the ECU detects it, the damage could be done :(
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