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Would PSM slow down the car?

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Was in heavy rain, stand still and have a try on 0-60, the fastest try never run under 5.8s. But surprised that couldnt feel the car slip a bit, guess it must help by the 4WD and the PSM, just wonder if the 0-60 timing were affected by PSM or both the road condition too.

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I don't think PSM would do anything unless you had more than 8 degrees of slip angle ...ie drifting the rear out at any point. That being said, traction control, which can't be disengaged, would definitely hamper a 0-60 run in the wet. The PSM system applies one or more of the brakes in order to attempt to cure oversteer and you would feel it. Traction control on the other hand is just that....an attempt to control wheel spin and keep traction. You will see a light flash on the dash if any of the above systems were intervening.

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If I remember correctly it's an exclamation mark that blinks "!" I may be wrong on that.

But there is a light that will blink for either PSM or TC

Yes PSM will effect power delivery. If PSM cant control the rear wheels when accelerating from a rest it will intervene the throttle angle to reduce the power. Like lifting your foot off the accelerator but much quicker. So the car will be dramatically slow. Attempting to do 0-60 in the rain is a bit foolish TBH , that's what the PSM is for, to control wheel spin. It not only corrects for driver error drift, skids. If you turn off the PSM then PSM will not intervene with power delivery and you will spin the rear wheels. PSM is still active in the back ground for extreme situations such as emergency lane changing but it will not control traction loss when accelerating. So if you want to do Donuts and drift the car out of bends, turn off the PSM.lol

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