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  1. In the process of chaning sparkplugs - Advice needed

    Tuning, Technical Questions
    So I'm currently changing sparkplugs on my RB25DET. It's first time changing them, (atleast for me) and since I don't know when they were last changed, I figured it was a good idea. I've taken the old ones out and put the new ones in, but now I'm not totally confident wether it'll run better or...
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