For normal driving 3-4K in most gears. When on twisties or messing around 6K to 6.5K. One of the nice things about running my car on a dyno is that the graph shows hp peaks at 6.5K, then drops off noticably after that, so it does not help to take shift points above that if looking for max performance. At least that is what I see in my car with its mods,
Ed