What I'd like to know is how they got Bosch to let them go at all with their engine controls, injection, etc.  Many have looked into this for years and the answer from Bosch has always been that they will not, under any circumstances, allow Bosch engine controls to be used for aircraft piston engines.

Since much of this response came while Theilert was certificating his conversions (under JAA), we have to wonder if Bosch would allow only his, or only German manufacturers to use their products in aircraft.

Eric Ahlstrom