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Originally Posted by GunMetalGrey
What did you mean to write when you wrote "Usually didn't occur on out lap, only when up to speed. "?
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'Out lap' is a reference to the first lap, where you're not going 100%... waiting for tires to come up to temp, checking the track for any changes in condition, etc. I did not encounter the surging on my out laps, usually the 2nd or 3rd lap as I came up to full speed.
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Does it happen on all straightaways or only on a straightaway after a long hard corner?
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Well, technically all straights come after a corner, and on a track, they're all 'hard', but I experienced the surging on every straight where the car was full throttle in a straight line. After rights, after lefts, and after a right/left chicane.
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Have you tried to replicate this on the street?
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No. Experienced it for the first time on track yesterday. It only happens when running hard on the track, and I'm not sure I would want to try to replicate it on the street.
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When it happens to me it happens both mid corner and upon exiting the corner if its after a long and hard one.
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I am not experiencing it in the corner, or on corner exit. Only at full throttle.
I specifically ran the car in PTM Sport 1, Sport 2 and Race to ensure it wasn't some issue with traction control or stability control, and the hesitation was present in all modes. I can feel when the car is pulling power with a heavy foot on corner exit, and that's not what this is. Car is hooked up and going in a straight line, then starts surging like the fuel is cutting out and back on.
I'm going to look at PDR video today, and see if it's apparent on there. If it is I'll try to post a video.