Stik,
Many fuel-injected engines have an "alternate air" lever. I've only got a few hours on these engines, so I never really got to the bottom of this alternate air, but the way it was explained to me when I first got checked out on the C172 Millenium was "it's a bit like using carb heat, except that it's not heated". I took this to mean that inlet icing is still a possibility, and that the alternate air would overcome this at least in the short term. But from your post, I'd guess you don't agree with that? If that's not the case, what is the alternate air actually for?
FFF
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