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Scion FR-S / Toyota 86 GT86 General Forum The place to start for the Scion FR-S / Toyota 86 | GT86 |
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01-19-2022, 08:34 AM | #15 |
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01-19-2022, 08:38 AM | #16 | |
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You could try retuning it. Use the same map, or it was my understanding that there was a library of OFT maps. Perhaps there is a different one that will behave better. Have you checked your air filter? Run seafoam/fuel injector cleaner? Sent from my ONEPLUS A5010 using Tapatalk |
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01-19-2022, 08:45 AM | #17 | |
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01-19-2022, 08:55 AM | #18 | |
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Sent from my ONEPLUS A5010 using Tapatalk |
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The Following User Says Thank You to Ashikabi For This Useful Post: | Tcoat (01-19-2022) |
01-19-2022, 09:35 AM | #19 |
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You have an OFT, do a datalog, bet your IAM is low.
Start here. https://www.ft86club.com/forums/show...01#post1842501 Upload to datazap. https://datazap.me/ Post link. Get Help. Profit.
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01-19-2022, 10:03 AM | #20 | |
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Take about 5 octane off any European (used in Dubai), Aussie or Japanese numbers . Still stuck on what the tune is. If the stock cars were faster then why not just go back to the stock mapping and see what happens? I think there is more to this story someplace.
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01-19-2022, 11:08 AM | #21 |
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As mentioned above if you have an OFT device, then datalog and post. That will show what's going on with your engine.
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01-19-2022, 11:46 AM | #22 |
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How about your wheels & tires set up? What's are their sizes? What's their weight?
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01-19-2022, 12:32 PM | #23 | |
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https://datazap.me/u/02maher/log-164...og=0&data=1-13 https://datazap.me/u/02maher/log-164...og=1&data=1-13 |
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01-19-2022, 12:37 PM | #24 | |
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Get car to operating temperature. Cruise at a steady RPM for a few minutes, and then post it. It is easier to see issues at steady state but from what you posted your fuel trims look jacked up. It is harder to see when you are on/off throttle a lot. Looks like you have an exhaust leak though. Looks like you are on a V4 tune as the IAM starts at .7, it does climb to .73 which is a good sign.
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01-19-2022, 12:44 PM | #25 |
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Also, remove "boost" and add "injection mode" to the log. You do that on the OFT in a menu with what parameters you want logged.
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01-19-2022, 12:44 PM | #26 |
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IAM goes to 1 in the second log so fuel quality is probably fine. Fuel trims are definitely indicative of an exhaust leak near the O2 sensor
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01-19-2022, 02:26 PM | #27 | |
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https://datazap.me/u/02maher/log-164...5?log=1&data=1 https://datazap.me/u/02maher/log-164...5?log=2&data=1 Last one illustrates the shaking that I'm experiencing after 2300rpm, still on certain occasion it's worse than that... If there is an exhaust leak is it most probably before the headers? |
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01-19-2022, 02:51 PM | #28 | |
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Simple stuff first. I would check where the header mounts to the cylinder heads, you may see black soot where it is leaking. I would also check from where the header mounts to the overpipe, and around the O2 sensors. An indication it is leaking would look like this picture. See the soot?
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The Following User Says Thank You to NoHaveMSG For This Useful Post: | 02maher (01-19-2022) |
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clutch, evaporative, lag, misfire, system |
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