The factory coil packs are made from stone and flint, in the world of technology they are very old.
I have been searching for years to find an upgraded aftermarket coil packs, up until recently no one made them for the Nsx.
On a Forced Induction build a good strong spark is very important, it's the difference between detonation. To work with the factory coil packs in the passed you have to close the gap on the plugs a crazy amount. If the spark isn't strong enough you can also suffer from something known as spark blowout.
Like back in the old days, to get more power from a NA car you would replace the plugs, leads and distributor. This is the same principle a stronger spark gives you more power on a NA car and offer a element of safety on a Force Induction car.
www.amwdynoservice.com Has developed a kit using Bosch coil packs from a modern supercar, this will provide a better/stronger spark compared to the factory coil packs. These come with a harness and are plug n play also replacing the factory wiring harness from the igniter including the igniter itself (little black box behind the throttle body).
Here is another pic
Not only for performance reasons i wanted to replace all the factory coil packs with brand new just because it's a electrical part partially exposed to the elements that is now 20 years old. For peace of mind and good practice. The factory coil packs cost a small fortune, it made sense instead of paying all that for oem to upgrade them offering more protection to the engine at the same time.
I think i must have about 4 sets of oem coil packs sitting at home, consisting of brand new and used
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