using AgentY's vehicle editor mod, i was able to make my default d-series sound AMAZING (sorry for the audio cracks, idk how it happens)
that post was 4 years ago... that mod is heavily broken because of the amount of times the game has updated
here's my current default: a 1966 rotary ibishu celtia with a stage 2 turbo, 14 x 8 leonard pismo's at the front, 14 x 9's at the back, and a carbon hood. and it's great
how does ur satsoom work, my satsoom is broken. --- Post updated --- it says its broken and it says put it in safe mode