The stock tach in the car reads normal when driving normally but sometimes (maybe all the time) when you give it full throttle it suddenly reads high. Like say 7k when it should be 4 or 5. I don't have the car yet but it's an issue I saw on the test drive and that was pointed out to me.
Is this a common issue? What's likely to be the cause?
Is this a common issue? What's likely to be the cause?