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Awhile back a friend and I ordered plugs in bulk from a reputable online vendor. Have ordered from them in the past and have never had a issue. Anyways, the plugs were NGK and as soon as we started using them, we ran into problems. Weird operating temps that were not consistent with prior data points and other anomalies. We contacted the vendor who offered a refund but didnt really thnk much else at the time. They figured the box may have been damaged. I took a few of the plugs to work and I had our incoming department look at the plugs. It was discovered they were BOOTLEG NGK plugs. Another larger group found the bootleg plugs around the same time, and a difference was soon discovered to help tell the bootlegs from the real deal. Let me tell you the bootlegs were GOOD clones, and if we were not doing plug chops at the time we may have never found the issue. We have never encountered another bootleg NGK plug in a long time, and all the vendors are now on high alert.
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