Thread: Racing plugs
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      12-10-2012, 05:20 PM   #7
Andrew@ActiveAutowerke
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Drives: 17 F80 M3 YASSS
Join Date: Dec 2011
Location: Miami Fl

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The hks worked very well on our level 3 supercharger kit producing another 8-10 whp.

I would stick to the stockers if NA though.