I've run everything in my GTP and the only ones that sucked were
Champion CU core.
I have NGK iridiums and they're fine.
That being said, I've also run PT plugs without issue.
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I've run everything in my GTP and the only ones that sucked were
Champion CU core.
I have NGK iridiums and they're fine.
That being said, I've also run PT plugs without issue.
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