I think the sound of the XRR GT Turbo car aint realistic enough.. I own a Renault 5 GT Turbo in real life and when i drive it, u cant actually hear the engine sound.. by the time u go on 2.500REVs u only hear a phhhhhhhhshhhhhhht from the turbo sucking air, and then woompshhht whenever u change gear, depending on how many REVs u are (higher = louder).
thanks.!