I would say either the 8's or 9's
I promise, I'm not talking about tuneups that are "off"
In one post you say that for a tuneup that is way off a cold plug is dangerous because it will read wrong. Now you say if the tuneup is way off the heat range doesn't affect the read.
Id still love to see some pictures where the heat range of the plug affects the read. Maybe I can learn something.
And why on earth would you "push" a 400 hp tuneup on a high end 632?? And what does that even mean? Were you cranking timing into it to clean up the fuel ring
......you can read into it what ever you want. Your motor do as you wish......Have fun
Fellow racer and servant of the Lord of Lords
"Creekside Racing Ministry"
MFI system, ProCharger Non-intercooled [6.02 @ 229 or 3.91/660' soft tune and killing power above 6K rpm]
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