Thanks for the link, I also noted this from that article, seems like it might have a little left in it too.


"There's yet another testing parable with our M45, this one involving its Q45 sibling. The Q's day at the track was in early spring, with moderate temperature and humidity. Our M's initial testing came during a mid-summer extreme of dry heat, with track temperature at 100 degrees Fahrenheit and relative humidity around 23 percent.

Hotter air is less dense; hotter, drier air puts an engine's knock sensing on high alert; both, to the detriment of power.

How detrimental? Our Q got to 60 in 6.5 sec. By contrast, our lighter, shorter-geared but extreme-conditioned M45 took 6.7 sec. Then we retested the M45 early one morning under rather more normal conditions, at 68 degrees Fahrenheit and 65 percent humidity, and got 6.1 sec.

We've taught ourselves — and I hope you as well — not to quibble about a couple tenths of a second. But 0.6 sec. is certainly worthy of an early morning wakeup."