05-12-2013, 06:48 PM
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CC Member
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Join Date: Feb 2012
Location: Keller,
TX
Cobra Make, Engine: Lonestar Classics LS427. Self-built 408W, AFR 195 heads, Performer RPM Intake, Quick Fuel 750, 407rwhp, 479rwtq
Posts: 549
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Not Ranked
I use the E3 plugs and really like them. It seems to run better. I think it is that you don't have to gap the E3's, but not exactly sure why.
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