I tried a Dynamite 086 on my MG66 last meeting (which I actually bought for my GX-3R but had to give it a try). Nice powerband, wicked top end, and I got a minutes extra run time
Our track is very open and fast, so your on the throttle hard a lot. With a 6.5mm restrictor I normally come in after a 7 min heat (say around 7.40) with only a few mm of fuel left in the bottom of the tank. Last meeting with the 086 I ran a 7mm restrictor and came in at 7.48 with just under 1/4 of a tank. Big difference from the 2072 - on this particular track anyway.
The 086 seemed to get the MG onto the pipe and hauling a little quicker than the 2072. Maybe not as smooth, but I think it stopped me pulling uneccessary throttle due to the faster response - not sure really, but I like the extra minute run time
On a tighter track with less throttle use it should give excellent run times. Thanks for the tip Matt