Hey, I have another (probably stupid) question, but how necessary is it to change out spark plug wires? I've had multiple vehicles with over 100k and my last one I sold at 200k after I put 100k on it and have never changed any spark plug wires. I've always understood this as a performance mod, or replace when broken, have I been starving the ol' girl with poor spark? I intend to change the plugs shortly as I have 113k on her and I'm doubtful they've ever been changed, debating on doing the wires also. Thanks.