R R.E92 Senior member Sep 30, 2019 #21 Silverstar said: Pbondar said: R.E92 said: That's the first I've ever heard of active sound in an E89. I think you may be getting confused with other BMW models. Click to expand... If you look o TIS info you will see that ALL Z4 E89s have ASD with maybe some 6 speaker basic versions not having it.. Click to expand... I believe only the N20 engine has it, N52 and N54 doesn't. I could be wrong though. Click to expand... That sounds a lot more likely. The N54 sounds good enough without needing any trickery like ASD.
Silverstar said: Pbondar said: R.E92 said: That's the first I've ever heard of active sound in an E89. I think you may be getting confused with other BMW models. Click to expand... If you look o TIS info you will see that ALL Z4 E89s have ASD with maybe some 6 speaker basic versions not having it.. Click to expand... I believe only the N20 engine has it, N52 and N54 doesn't. I could be wrong though. Click to expand... That sounds a lot more likely. The N54 sounds good enough without needing any trickery like ASD.
