Well, i can't say I Have Memories of the LAWNMOWER Sound (Aka the original sound for every single car before the sound update) And man, it is good, one downside is that it should be a separate engine, unlike the rest, You did the best you could though.
For a first sound mod, this contains sounds of a very high quality!! I'm amazed.
But, they don't even sound close to a knocking V8.
This sounds more like a little 400cc bike engine with low oil.
Don't get me wrong tho, this does not lack potential.