Last night, my car was re-tuned by JDM Sam, and I and it screams now. We noticed that up top, always around 6,000 RPMs, it seemed like the spark was cuttion out. Timing and fuel were great. As a result, I am researching better coils. I went to the Haltech site, and came across these:
LS1 Ignition Coil
A high energy single coil with 'built-in igniter'. For use with wasted spark and direct fire application.
and
Dual 12V Ignition Coil
A high energy single coil with two posts. For use with a wasted spark direct fire application.
Those who have upgraded their coils, what are your thoughts and input on the matter? Juan, Steve, Sam, Beau, yall out there?

LS1 Ignition Coil
A high energy single coil with 'built-in igniter'. For use with wasted spark and direct fire application.
and

Dual 12V Ignition Coil
A high energy single coil with two posts. For use with a wasted spark direct fire application.
Those who have upgraded their coils, what are your thoughts and input on the matter? Juan, Steve, Sam, Beau, yall out there?