Hi, sorry only just saw your post!

no, I just take it off every time! It doesn't take long with the right knack. The people who run the dyno I use are good guys and they only charge for the time actually spent on the dyno. So it doesn't cost you any more than it if the engine mount was somewhere more sensible!

Torque and horsepower graphs only cross at 5252 rpm when the scales are the same. If you look at the numbers on the BTEC graph, you can see they are on two different scales.