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You can do a blow through very easily, the converter doesn't actually need a 'vacuum' signal to allow gas to be fed to the mixer, all it needs is a pressure variance between what it senses as being atmospheric pressure and that of the signal from the mixer.

With this in mind all you need to do is put a fitting in the atmospheric vent on the converter and run a hose from that fitting to somewhere between the turbo and mixer.

In all essence it is the same as running almost any carby on a blow through system.

The point you make of the gas not forming droplets in the intercooler is a good one, however what happens when you switch the engine off? There will still be quite a lot of mixture left in the intercooler, nice bomb...