well not as simple as that.

The ideal mixture is about 14:1, also called lambda=1.

But if you have certain parameters of use like
RPM
accelaration,
Airtemperature high, low
Airpressure high, low
Cold motor (less evaporating fuel in cylinder and thus richer mixture needed)

etc. etc. etc.

you get lots of changes in actual needed air to fuel ratio. Many FuelInjection Systems are a not specified to recognize all those factors, where some really complicated carburators do.

So it´s not that simple one could say:
Fuel Injection is working better than a carburator in terms of providing the RIGHT mixture for all operating conditions.

Damm, I think I flooded her!...

Now you know the real reason, why I fought so hard for realistic start up's:-P .. Flames

erm... no, in a nutshell: mixture has different ratios, which need to be varied according to your altitude (leaner/richer mixture), besides a 50/50 mixture ratio would probably send your valves into orbit ;) (Disclaimer: just wanted to make a joke here, please don't take it literally and start posting copy/paste engineering blabber..)
What Richie said just doesn't make sense: engines won't produce different flames if they're direct injected or carburator injected. Or maybe I got it wrong in the first place.

I have a sneaky suspicion that Thor might know what he is talking about when it comes to engines...;)

..I bet I know a couple of things too ;)

Amen :)

ideal mixture is still basically the same at any altitude. The difference is that the air density decreases as you go up, requiring mixture adjustments to maintain the same air/fuel ratio. Some planes had auto compensation, but most did not, so mechanical tune and operator capability also come into play here.

smoke effects
 

Well, if this colour is the result of computation alone, I think it is remarkable!
Fantastic modelling which just blows my engineering mind away.

If we are talking realism, I would say that a carburated Merlin engine starting up from cold will emit yellow flames because the mixture will be rich. After a few minutes, i would say the flame would go blu-ish?

A Daimler Benz of the period had fuel injection so i would imagine the exhausts would be blue-ish from the start as the air-fuel mixture would have been slightly leaner? Probably 'blipping' the throttle would make the burn 'leaner' as the blower increased the air flow, so it probably went bluer?

Are there any surviving RAF groundpersonnel (engine specialist) who would know? I might drop the Battle of Britain Memorial Flight a line... but it's almost a trivial detail, isn't it?

Can't wait for the game to come out, but I'd rather wait until Oleg is happy to release it, rather than rush it.

Marx

I'm curious which injection systems you are talking about.

The main problem with a carburetor: it's very hard to distribute the mixture to all cylinders equally. Plus fuel injected engine are less prone to icing, they have a faster throttle response and are easier to start when cold.

I dont think your really getting my point...lol