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BRZ First-Gen (2012+) -- General Topics All discussions about the first-gen Subaru BRZ coupe


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Old 10-14-2021, 06:31 AM   #1
DoofyBrd
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Question OFT Problems

Hi, I'm having a problem reflashing my car. I gave it a stage 1 tune a couple of months ago. I recently upgraded to Uel Catless headers, and every time I connect my oft to my car it says ECU number mismatch! Every time I plug my oft into my computer it says the device has never been used. I don't know what to do and I am stuck. Please help! Also is it bad to drive in stage 1 with cat-less headers and a cat-back exhaust?
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Old 10-15-2021, 02:06 PM   #2
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Hi, I'm having a problem reflashing my car. I gave it a stage 1 tune a couple of months ago. I recently upgraded to Uel Catless headers, and every time I connect my oft to my car it says ECU number mismatch! Every time I plug my oft into my computer it says the device has never been used. I don't know what to do and I am stuck. Please help! Also is it bad to drive in stage 1 with cat-less headers and a cat-back exhaust?

Try flashing back to stock and then re-download all the tune files. Maybe also update your software I spent 30 minutes yesterday updating my device because Im doing a revision on my tune.

Does you OFT allow you to "Read" you ECU?
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Old 10-18-2021, 09:45 PM   #3
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I tried flashing my car back to stock, but it won't let me read the ECU. Every time I try to tune my car it say's "Tuning file mismatching. ECU write denied" I'm pretty much stuck, I emailed OFT a week ago, but still haven't they haven't got back to me yet.
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Old 10-19-2021, 08:46 AM   #4
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I tried flashing my car back to stock, but it won't let me read the ECU. Every time I try to tune my car it say's "Tuning file mismatching. ECU write denied" I'm pretty much stuck, I emailed OFT a week ago, but still haven't they haven't got back to me yet.
Yeah, their response time takes forever.

There's gotta be some sort of files on your computer, like when you download the tune files and your ECU number for the first time. I hope OFT gets in contact but try every single route, even their Facebook page.
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Old 10-20-2021, 03:15 AM   #5
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I'll definitely give that a try, thanks for the input man!
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