well i almost always drove "manually" with my auto, including engine braking, into first and everything. the exhaust note gave me a chubby. i could also blip the throttle for extra **** factor and it sounded sweet~
the box took it fine, however i did have it serviced, all fine, but then it developed a small leak, which meant more and more oil dripped out, and on a hot summers day after a thrashing, i cooked it and it dumped oil all over my drive way.
and as a result, the C4 clutch band is now gone, and i have no engine braking.
lesson to be learned, abuse it and think "she'll be right, its just a small drip", youll stuff it. if i had of looked after that little leak when it developed,im sure id still be listening to my car popping and crackling and sounding real angry all the time.