05-23-2016, 09:20 AM
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CC Member
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Join Date: Apr 2012
Location: Bay Area (Peninsula),
CA
Cobra Make, Engine: ERA 427, 427/487 side-oiler
Posts: 1,248
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Not Ranked
Like I said before, I think there is sone thing else going on here. You already have big PV restrictions and big jets and you are making radical changes that are only helping marginally.
If I were you I would pull a few plugs and cut them with a hacksaw so you can see the whole insulator. Inspect for color (mixture) and specs (detonation). Plugs don't lie, wideband meters sometimes do.
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