[Keith 944]

you must have heard something bad about these wires to be asking, here is my experience with the ultra 40's. pricey, but i wanted the best. put them in my car when they first came out, during an off season. at first race, noticed the fans and water pump would just turn off and on at will while car was running. driving around pitts car would just shut off. wtf? i have the arc flat panel switches, like a microwave. so i called a.r.c. he said right away. did you get a new set of ultra 40's for Christmas? yep. he said they were just like solid core wires. solution for me. put my coil back outside firewall. make coil wire no more than 1' long. and this should fix the problem.
I gave those wires to a Friend and bought some old faithful accell wires. had no problem with them before and no problem with them now....
I always say better safe than sorry, sucks to loose a round over something so easily fixed. just my exp.