Hello again! As usual thanks in advance for all replies! Is there anyone who makes a better ignition coil for our turbo Buicks? I had a modified 5.o Mustang with a Powerdyne Supercharger with 12psi of boost. The car started popping back through the intake at high boost and it ended being the coil. After replacing the coil with a Mallory coil designed specifically for a Supercharged application the car ran better than it ever had! The coil worked wonders! I have replaced the factory coil several times on my GN for the same reasons. Doe's anyone make a coil designed for turbo application with higher than stock boost levels.ore voltage and saturation? My car would seem to need it at times-so to speak. Thanks again