Join Date: Sep 2002
Location: Westchester County, NY
Sorry to hear about your issue. It does sound like ignition to me, as I had the same scenario but brand new Magnecore wires from our host solved it. (I know you said yours were new, but maybe you can switch wires/coils/CDI box from your other 930 and see if it clears up.)
Otherwise, I woud recommend some quality time with the Search feature in the regular 911 Technical forum. You should find all sorts of specs for ohms in wires, coils, bosch CDI boxes, and little green wires to the distributer.
Good luck and please post back with what it was when you do lick it.
1986 930, 1969 Mach1, 2003 540 Sport