OFT Battery Disconnect Tune? - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

mcrane · 12-09-2015, 08:45 AM

This may be a stupid question, but I figured I would post it anyway for future users if they are also curious...

Once my ECU has been flashed with the OFT, would disconnecting the battery or accidentally having the battery die on me revert the ECU back to a factory tune?

I would think not since the new tune would be stored within the ECU after flashing. The only way to get the stock tune back would be to flash it back, is my understanding.

But again, just a curiosity and additional forum info for future customers.

- Thanks Guys

Kodename47 · 12-09-2015, 09:16 AM

Removing power to the ECU will reset info like LTFT and IAM etc. However you are correct that the tune is not removed. You would basically end up as if the tune had been flashed for the 1st time, meaning pedal/throttle learning needs to be carried out etc.

12-09-2015, 08:45 AM	#1
mcrane Member Join Date: Nov 2015 Drives: 2013 Scion FR-S Location: MA Posts: 78 Thanks: 21 Thanked 21 Times in 15 Posts Mentioned: 2 Post(s) Tagged: 0 Thread(s)	OFT Battery Disconnect Tune? This may be a stupid question, but I figured I would post it anyway for future users if they are also curious... Once my ECU has been flashed with the OFT, would disconnecting the battery or accidentally having the battery die on me revert the ECU back to a factory tune? I would think not since the new tune would be stored within the ECU after flashing. The only way to get the stock tune back would be to flash it back, is my understanding. But again, just a curiosity and additional forum info for future customers. - Thanks Guys

12-09-2015, 09:16 AM	#2
Kodename47 Senior Member Join Date: Oct 2012 Drives: UK GT86 Location: UK Posts: 3,040 Thanks: 185 Thanked 1,632 Times in 1,113 Posts Mentioned: 156 Post(s) Tagged: 1 Thread(s)	Removing power to the ECU will reset info like LTFT and IAM etc. However you are correct that the tune is not removed. You would basically end up as if the tune had been flashed for the 1st time, meaning pedal/throttle learning needs to be carried out etc. __________________ .: Stealth 86 :. Abbey Motorsport/K47 Tuned Sprintex 210 Supercharger Kodename 47 DJ: Soundcloud / Instagram / Facebook

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