Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB - View Single Post - Hesitation on throttle when warm, negative LTFT (datalogs and vids)

Grant Runion · 06-03-2021, 10:18 PM

Been a while since I have been able to work on the car but finally have some kms on the tune. I flashed with the MAF sensor rescale and put on about 140km. The hesitation is still there regrettably. I'm trying to gleen something from the datalog but I'm at a loss as to what to make of it. Specifically, at idle it looks like the LTFT is starts high negative then slowly comes closer to 0, while the STFT bounces like a yo-yo. The STFT creeps up, then falls back to a low value, creeps up, falls back to a low value. Is this normal? Any suggestions on where to go next?

https://datazap.me/u/grant-runion/2-...8-9&zoom=0-585

06-03-2021, 10:18 PM	#14
Grant Runion Member Join Date: May 2021 Drives: 2013 Subaru BRZ Location: Ontario Posts: 10 Thanks: 8 Thanked 2 Times in 2 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Been a while since I have been able to work on the car but finally have some kms on the tune. I flashed with the MAF sensor rescale and put on about 140km. The hesitation is still there regrettably. I'm trying to gleen something from the datalog but I'm at a loss as to what to make of it. Specifically, at idle it looks like the LTFT is starts high negative then slowly comes closer to 0, while the STFT bounces like a yo-yo. The STFT creeps up, then falls back to a low value, creeps up, falls back to a low value. Is this normal? Any suggestions on where to go next? https://datazap.me/u/grant-runion/2-...8-9&zoom=0-585 __________________ if (gap.exists() and isGoForGap == false): isRacingDriver = false Last edited by Grant Runion; 06-03-2021 at 10:18 PM. Reason: Forgot to add data log