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06-17-2017, 11:18 PM
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#1 |
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The Dictater
Join Date: Apr 2017
Drives: '13 Red Scion FRS
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WOT AFR Swings
Hey folks, Im getting some strange AFR behavior during WOT pulls and hoping someone can help me out. Link below is a sample pull, but AFR shows the same for every pull for the last couple months, in all conditions. At least its consistent.
http://datazap.me/u/spuds/olsample2?....29&tmax=44.65 Mods: OFT Stage1 93 octane, Perrin inlet tube, nothing else worth noting. In case its not obvious, Im referring to the sawtooth-like pattern in my actual AFR. Drops gradually, then resets around 4200 RPM, then starts dropping again. Im going nuts trying to figure out what is going on.  Has anyone seen this before? I imagine this isn't limited to my car, but its kind of hard to search for what someone else would call it. If the answers are on the forum somewhere, please send me in the right direction. Are there any troubleshooting suggestions? I was thinking of logging .75% throttle pulls and seeing if the same thing happens as my next step, but not really sure what that would tell me. Lastly, since Im pretty sure this will be the first suggestion, I could correct with MAF scaling, but take a look at what that would look like. My closed loop is exactly what is needs to be, so that part isn't changing. With that shape making no sense, it seems like there should be something else I can do to compensate. Last edited by Spuds; 06-17-2017 at 11:29 PM. |
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06-18-2017, 09:29 PM
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#2 |
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Senior Member
Join Date: Jun 2015
Drives: GT86
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Have you already tried to make adjustments in the 4k area with load-limits?
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| The Following User Says Thank You to freerunner For This Useful Post: | Spuds (06-19-2017) |
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06-19-2017, 12:04 AM
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#3 | |
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The Dictater
Join Date: Apr 2017
Drives: '13 Red Scion FRS
Location: MD, USA
Posts: 9,635
Thanks: 26,665
Thanked 12,691 Times in 6,287 Posts
Mentioned: 88 Post(s)
Tagged: 0 Thread(s)
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Quote:
Im now looking at this thread (below). How I missed it originally, I have no clue. It looks like the same exact thing I am seeing and it looks like they got it sorted out. http://www.ft86club.com/forums/showt...=115056&page=5 |
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