Quote:
Originally Posted by Gunkk
Yep that’s the hypothesis... Travis’ data is pretty convincing.
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That is interesting. I'm sure the convertibles run a slightly different software baseline, so there could be something there, but I believe there have been some guys with the convertible ZL1 who have experienced the "bogging" problem. I don't recall the transmissions for these cases though.
I'm a bit of a skeptic by nature, so I can't help but think that under more controlled circumstances, such as a drag strip, your experience would be similar to the rest of us. I've actually noticed myself that high-traction surfaces are slightly more problematic for "bogging", which makes sense if it's because it's reaching torque limits in the software.
Anyway, just to be clear, I don't have any data that ties to the eLSD specifically. I thought the eLSD was related originally, but I really can't think of a reason why the eLSD would matter unless it's just something coincidental.
The nuances with the wheel slip % and the conservative torque management are my two primary suspects. One area I haven't looked into much is the Performance Traction Management (PTM). There could be a tie in there, but I simply don't have a way to capture the data to be sure. I suspect PTM needs to know exactly how much grip is available in order to work. To know how much grip there is, GM must be letting the wheels slip a little on purpose (and then pulling power to regain grip). I don't know how much PTM is integrated into the launching of the car, but it seems plausible that there could be a relationship there.
The good news is, the poll is looking promising for this question. I've been making educated guesses for about 8 months now with no way to validate the theories. I'm really looking forward to knowing what's actually happening.