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Did this ever get to a solution? I'm on E85 with semis and finding the same problem at Phillip Island GP circuit in AU. Always the final corner which really kills my run onto the straight. Was never a problem on street tyres as I wasn't carrying as much corner speed.
I thought it was tune or hardware related but it does it no where else and only if the fuel is below ~3/4? If I keep the tank near full the issue disappears.
Video attached is my quickest lap there, start of the video is the middle of the corner, goto about 1:40 for the full run through the problematic corner. Speed is from about 100 to ~180km/h, constant left. The long right at 1:20 in the video is same speed range but obviously the fuel is being sloshed towards the pickup so starvation isn't a problem.
[ame="https://www.youtube.com/watch?v=slQnMA1eSJw"]Toyota 86 - Phillip Island - 1:52.1504 - YouTube[/ame]
Keeping the tank full is a cheap and easy fix so I'm not really prepared to spend massive dollars doing custom tanks or anything like that. But if there was a way to do something relatively affordable intank I'd consider it. Carrying an extra 20-30L of fuel has to be worth a few tenths hehe.
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