Find me NGK plugs with the same design as the HKS and I will believe that. Yes NGK does make the plugs for HKS but that does not mean it's the same thing as the NGK's. The design is different and better suited for boosted cars. I have the HKS plugs at the shop so I will take some pictures and get back to this thread when I have the chance.
Again, not hating on NGK or other brand of spark plugs out there.
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