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Engine, Exhaust, Transmission Discuss the FR-S | 86 | BRZ engine, exhaust and drivetrain. |
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07-02-2020, 10:38 AM | #1 |
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Stage 2+ Brz runs like stock
Hello everyone, it’s been awhile since i posted here. I’m having a problem so im hoping we can figure it out together. last night on the way home my CEL came on and i had my OFT with me so i scanned it, came to be P013a. deleted the code and came home. This morning when i started my car i thought something was off, even when driving it doesn’t pull like it used to, the car is a lot louder and feels mushy. I also had pop tune which doesn’t work anymore. anyone have any tips on what to do? i was thinking reflash the ECU.. let me know thanks!!
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07-02-2020, 10:58 AM | #2 |
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When you clear a code it also resets the all the learned fuel tables and other stuff so you just need to drive it a bit before it feels normal again
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07-02-2020, 11:02 AM | #3 |
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could it be just that? reason is after i clear the code (last night) the car ran perfectly fine. Another thing is i have an nameless EL long tube header setup and the power doesn’t come in till 3700rpm(def feels the pull after) and now there’s no power coming in anywhere.
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07-02-2020, 11:18 AM | #4 |
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yup, its really that simple.
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07-02-2020, 12:40 PM | #5 |
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Most likely what above said. Give it about 10 heat cycles / 100 miles to relearn everything.
That code is for faulty 02 sensor. Could just be a one time fluke. If it returns replace 02 sensor. Are your fuel trims good? |
07-02-2020, 02:21 PM | #6 |
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what should i look for when checking my fuel trim, on the OFT i can see St fuel trim and LT fuel trim percentages.
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07-02-2020, 02:43 PM | #7 |
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Combined values shouldn’t be over +/- 10% and individual values shouldn’t be over +/- 10% either.
IE 6% ltft +7% stft = 13% = bad if ltft is say +7% and stft is -4% = +3% = fine (probably needs more time to sort out) If ltft is +12% and stft is -7% = +5% but individual value is over 10% either something is off or possibly still sorting itself out especially if recent reset or recent fill up from different gas station. If trims are consistently off, you may have a vacuum or exhaust leak, or based on that code the 02 sensor is going bad and might be giving bad readings. If aftermarket intake could mean MAF needs scaling. |
07-02-2020, 03:39 PM | #8 | |
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Quote:
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07-02-2020, 03:55 PM | #9 | |
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Quote:
Fuel trims should almost always be in the window given above, whether you're maintaining speed or accelerating.
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Seek comfort in discomfort.
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07-02-2020, 04:24 PM | #10 |
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For a very quick brief moment like half a second or less fuel trims can swing pretty far on throttle engagement (after being fully closed) or throttle closing (after being open) otherwise in any other conditions/scenarios it shouldn’t be outside that window.
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07-02-2020, 08:30 PM | #11 |
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I would reflash it. Sounds like the cams aren't moving
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07-03-2020, 08:30 PM | #12 |
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specially when the ignition timings were retarted i was seeing some high values. guessing the unburnt fuel was causing it to set higher value?
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07-03-2020, 08:34 PM | #13 |
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Get a good tuner.
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