No. Not one place in this thread have I asked for 150 octane fuel. I don't think it is worth the time to do. I tried to slow this thread before it got going as we've had this discussion a number of times before.
I just tire of the Luftwaffe guys who think somehow they must have the highest performing birds to make the game fair for everyone. I also tire of them being so jumpy about their cartoon Luftwaffe birds that they don't read and comprehend very well and argue with people who never suggested doing the thing the Luftwhiners are arguing against.
I get it. You are new to this stuff, German stuff is cool and the bestest and that's the stuff you use.
"Bestest"? Maybe you should check out first grade again.
The top prop planes in this game are mostly Allied planes already, only two Axis prop planes comes close to match their speed (K4 and D9, you can also argue the 152 but not at the typical MA alt). No Luftwaffe guy is whining about it. However, when people are asking for these already top prop planes to be even FASTER and climb BETTER, then we have a problem. You already have some of the fastest planes in the game, yet you want more? ("you" meaning everyone who is asking for 150oct, not you - Guppy - the guy who thinks bestest is a word)
IIRC, at sea level:
Tempest
La-7
190D9
P51D
109K4
Are the fastest prop planes in descending order. Add 150oct and almost every single LW American and RAF planes becomes a pick-and-run plane. Can you imagine how ridiculously easy it would be to BnZ in a P47 and rack up 10 kills with that ammo load?
TL;DR Some of the fastest planes in the game are already Allied and only a handful of Axis pilots actually complains about it. No one really cares about that right now. So why on earth do the Allied planes need to have 150oct? They already have no problem running and chasing down Axis planes, why on earth would you need to make them faster?