Im lost. That graph above is the flywheel figure for the 4i yes? So 400 at the wheels or so im guessing. With which turbo. The 1st of your t38's or the 2nd one?

Your hub dyno figure is 492 at the wheels or hubs whatever with the lesser spec t38.

So yes one of those is completely wrong isnt it lol

You can only beleive one of those power figures as they are 90 bhp at the wheels/hubs apart

Or are you saying now your original hub dyno figure of 492 @ wheels/hubs is not believable?

Hence my comment of a realistic power figure from the 3 door at some point. Not 492 at the wheels on a hub dyno and then 400 at the wheels on a dyno dynamics. They shouldnt vary that much should they?