I started developing a misfire all of a sudden last weekend. It would misfire at about say 10lbs of vacuum. I changed the coils and now its only in boost. I've also changed the ICM, swapped the wires, and regapped the plugs to. 058 in case it was spark blowout. The only other thing I can think of is changing the plugs out, these are not even 2 weeks ago. I think I have a bad flex but I wouldn't think that would give me the problems I'm having. No codes and the car runs fine otherwise. Any bright ideas?