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Old 10-27-2009, 09:31 AM
Ralphy's Avatar
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Join Date: Aug 2009
Location: Atlanta, GA
Cobra Make, Engine: 86 Everett Morrison 90" WB. 428 FE
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Gunner,
I can't say for 4 stroke vehicles, however years ago I had a Yamaha snowmobile. I ran Champion gold plated plugs. I swear I saw at least a 15% increase in power, awesome like I had a different motor. They lasted maybe 10 hrs. of run time and when they quite I had better have had fresh plugs, because the motor just died. They fouled out!

Re-gaping is good I'm sure.
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