I just threw out a set of Bosch wires because they caused ignition problems. I replaced with a used set of OEM wires for troubleshooting purposes and the problems (harsh shifting, sluggish performance, bogging on the freeway) went away immediately. I forgot what was on the box, but the wires themselves say "Bosch-8mm opti-layer mag core ultra premium". They had about 25k miles on them.
My personal experience is to stay away from Bosch wires, but there are probably others who haven't had problems like I have.
