the code was simply a test. it does still exist within the TFX but i want to point out first why it was included and why it isnt standard already.
there are a couple of reasons why i allowed the engines to be released with the startup/shutdown features.
1. it's really cool and i wanted to see what the reaction by users was, hopefully stirring interest in such features.
2. it satisfies my ego- simply put, nobody can say JR didn't do it. (hey it's the truth)
there are also a couple of reasons that this has not been made a standard yet.
1. i feel the implementation could be more efficient if handled internally by native code, it is a bit wasteful by having to use workarounds to the existing game code.
2. the method is not necessarily compatible with ts12 doppler sounds, again, would be solved if handled by native code.
now with that being said, it could be used on generally any JR engine that is using the JRTFX library if it had the correct engine sound assets to go with it, but i would not assume any responsibility for using the features.