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From my understanding the plugs all moved 1 number higher to account for ethanol in gas.
I run autolite iridium 5244 plugs and I'm very happy with their performance
Zr5f are the recommended plug per the parts store. I have noticed that gap size decreases and heat range decreases with ethanol to make up for lack of combustion
And yes, ngk tr555 in the camaro for daily driver, ngk tr6 for nitrous. Higher number is colder
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Current: 1997 civic lx
Past: 1998hx/1996hx/1997lx/1997hx Cali/1997hx
OG lean burn member
My civic thread
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