Thanks guys. You gotta love Pprune dont you? You go to bed, get up in the morning and there's your answer!
Makes for interesting reading though. There are obviously some pilots out there who had nothing but hassles with it and others for whom it was the best thing since sliced bread.
The other thing that brought the question on was that about a year or so ago I was speaking with an ex 747 classic driver who had one of the injecting nozzles detach and got ingested into the engine - made a VERY BIG mess so I am told. This was before V1 so an abort was in order.
Any others out there like that?
Twin
Edited to add - I didnt even know w/m injection was used on piston engines, is there any more information on that out there and are these aircraft still in service?