hofo_mofo: Welcome to CD Freaks.
The BenQ DW1655 can overburn CD, however it needs a special 99 minutes CD --it wont overburn the regular 80mins.
You can check this thread:
BenQ DW1655/DW1650 overburning thread. In post#3 there is actual evidence that the drive can overburn CD.
Please note that the "Overburning test" in
Nero CD-DVD Speed is incomplete without the actual write test either with create data disc or image burn. As you can see in post#4 in that thread linked above, "Overburning test" says that it can overburn DVD-R but actual write test proved otherwise.