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Mustang92 · 09-21-2000, 06:50 AM

Didn't really notice much of a difference plus I installed pullies at the same time. I know the couldn't have hurt and like some other have said copper plugs are more for performance since the conduct better.

I used the NGK TR-55.

09-21-2000, 06:50 AM	#8
Mustang92 Drag Racer! Join Date: Nov 1999 Location: Lake Worth, FL USA Posts: 757	Didn't really notice much of a difference plus I installed pullies at the same time. I know the couldn't have hurt and like some other have said copper plugs are more for performance since the conduct better. I used the NGK TR-55.