So. Car is 440 with msd 6al2 digital. The other day. Changed my plug wires I have the Taylor 409s. After car starts up. Idles normal. After a slight warm up. All of a sudden the rpm will jump up to about 1300-1400. And the tach will jump / rev in reverse and the engine will pop and back fire. I turn car off and immediately restart. It runs fine for 5-10 minutes. Then same thing. Just put a new msd blaster ss coil because I thought it was that. ? Any ideas. Thank you
