Review on 🔥 Street Fire Ignition Control Box MSD 5520 - Black by John Stefko

Installed on a Chevy 307 with a circulation of 75,000 in stock 72 Nova, 3 joint ventures on the column. I am very happy with the results. The engine idles very smoothly and the throttle response is just terrible. Gas mileage seems better, but who cares. Exhaust noise has changed due to my bent 2.75" pipes, with a big rumble on deceleration. Before that, he cracked quite a bit, and maybe because of unburned fuel. The limiter works! The next step is to open up the gaps between the spark plugs and see how far that spark jumps. Installation was easy. Happy tourist!