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I am thinking of alternative ways to heat my 4.  I can build
a muff over the crossover tube, but I was wondering how hot
that tube got during various flight regimens.  Is it hot
only when the turbos are not boosting, i.e., below 28
inches, and as one climbs higher, less exhaust flows
throughout the tube, hence chilly buns?

I thought about adding an electrical heater.  THere is one
available from an outfit that basically looks like a 28v
hairdryer, 600W max.  I could pit two in, I guess, but I'd
like to take advantage of the 1600 F EGT instead.  I thought
about a duct off the oil cooler discharge air, but that does
not help my problem on the ground when the engine is cold or
the oil cooler door is shut.

I just don't like the thought of porting overboard turbo
boost when at flight levels, as the current seems to do.

Any thought you may have would be appreciated.

MDS