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This spring my car will go on a Dyno to test how much power the engine has.
Being no mechanic this got me thinking, to me it seems like you need to switch of the AH and TC when you do that. Otherwise the computer thinks that there's something wrong with the car because of the speed difference between the front and rear wheels and will apply the brakes to the rear wheels, right ??
I don't think they ever turn it off when they dyno it... My AH and traction lights stay on for about a minute after the dyno tho... basically to the end of the parking lot.