Lately I've been working on sounds for the Edonis and ended up with these two. They probably don't sound anywhere close to the real life Edonis but seem to sound better than the original in TDU, even though it may sound a little like a race car.
Both sounds are basically the same, the second one is just a higher pitched version of the first one, but with a stronger "whistling" and doesn't have backfire. You will need the Magic bnk1.map or else they won't work.
Hope you like them at least a bit, and please do post feedback. ;)
Sorry for the low quality samples, unfortunately I can't do much better...they sound well better ingame.
EDIT: I gave it another go, so now the "whistling" is a bit stronger and louder, added a backfire (not as loud as the one of Edonis I, though it may be a little too quiet) and the engine is pitched in between both the other two sounds: not as low as Edonis I but not as high as Edonis II.
Somehow I think it didn't come out as expected, still feels too similar to Edonis II...but do seems better.
EDIT 2: Well, and again I've given it another try. This time I left the same pitch as in Edonis I, added the stronger "whistlling" and made the backfire a bit louder, but still feels like it doesn't exist: this is because the charger/turbo sound covers it, yet mostly only when gearing, so, if you accelerate to high rpm's and let go off the gas, you'll clearly hear it. I'd make it louder but unfortunately the sound seems to distort if I get it any higher than it already is. :(
Oh well, I hope this time I got it better. ;)
Samples:
Edonis I: http://www.sendspace.com/file/q4ul72
Edonis II: http://www.sendspace.com/file/szcdro
Edonis III: http://www.sendspace.com/file/nh9yoh
Edonis IV: http://www.sendspace.com/file/yy489r