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Old 09-26-2012, 06:16 AM
robertobaggio20 robertobaggio20 is offline
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Join Date: Oct 2009
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Originally Posted by paperplane94 View Post
I don't know why, but the general consensus is that the new metal plugs cause the M20/30 engines to have decreased performance.

Maybe its a personal preference thing, but people have complained about the new plugs as of late, and people have not complained about copper plugs for the past 30 years.
My opinion is based on the experience of others and not empirical evidence. I would imagine it to be hard to test this kind of thing, so go figure.
Well, anecdotal evidence has its value as well. Hmm.
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