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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain.


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Old 05-16-2020, 12:26 AM   #1
jason_456788
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Extremely high LTFT trim. What's happening ?

It mostly happens during idle. I know normally it should be +/- 10% but this is way off. Anyone have any idea?
I have oft stage 2+ E85 tune . OFT catless uel header, Test pipe, N1 cat back, K&N drop in filter. Pretty much it. I would definitely appreciate any help I can get! Thank you! I have tried to reflash it, and it doesn't work. P0171 code showed up. As well as another code too but I forgot what code it was before I reflashed it.

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Old 05-16-2020, 12:27 AM   #2
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Update : as well as P2270 code.

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Old 05-16-2020, 12:37 AM   #3
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Exhaust leak near the header, maybe?
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Old 05-16-2020, 12:38 AM   #4
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Exhaust leak near the header, maybe?
After the header or before?

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Old 05-16-2020, 12:39 AM   #5
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Your car must be stupid loud.

Anyway, did this suddenly happen or did you just flash it for the first time and this is happening? Need a bit more backstory. High LTFT can be caused by a few things.

Where did you get this tune from? OFT does not supply an off the shelf e85 tune for 17+ cars as far as I was aware. The only way to get it is to have one modified from a different calid.


EDIT:

Here you go. Same issue as you are describing.

https://www.ft86club.com/forums/show...=121767&page=3

Fix:

https://www.ft86club.com/forums/show...1&postcount=36
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