We did a total of 10 runs. The first three were with the standard airbox. The next four with the larger one. Then three more runs to verify results. I can honestly say that heat soak played a massive game in power runs with every run done almost instantly back to back. After every run the following runs saw a drop of between 10-15rwkW every time. The car never left the dyno or was restrapped at any time and ambient temp was within 1 degree C between all the runs. The gap between the third run and the fourth run was a s long as it took me to remove the standard airbox and snorkel and fit the larger units. From memory it was about 5 or 6 minutes. The same process was done when changing back to the standard airbox. I agree that an 11rwkW gain may not be entirely accurate as there are variations between dynos, but until someone else can do the same testing that I have done, and supply proof, as I have done, I'm sticking with my claim of 11rwkW gain by fitting these items.