Comment by adiabatichottub

It works well if you use the turbo to feed air to the gasifier, creating a positive-pressure fuel system. Pulling from the gasifier runs the risk of fouling the turbo with tar and particulate, unless your operating conditions and filtration are perfect, which they rarely are. The danger in running positive pressure is that any leaks downstream of the gasifier could be emitting large amounts of carbon monoxide. If you can modulate exhaust pressure to the turbine then you can use the turbo to just overcome the pressure drop of the gasifier and filter without creating any extra pressure.