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  1. 04-20-2006, 03:06 AM #1
    Street Fighter
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    pewter
    99 Trans Am

    Are the tr55 plugs really better than stock?

    I have installed the tr55 plugs in my TA twice since I had it and I am yet to notice any difference in the idle of performance.If there is no difference I might as well go back to stock and get more time out of the plugs.Have anybody truly noticed any idle or performance change?
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  2. 04-20-2006, 04:03 AM #2
    SteveC
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    SOM
    2001 Z28 (Sara)

    They are copper tip plugs which conduct electricity better than platnum, however they do not last as long. It is all personal preference.

    I like to change my plugs every 2 years, because of the dissimilar (sp) metals between the plug, and the head.

    SteveC
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