Does anybody have an Overkill PCM for their Grand Prix GTP (mine is a 2000)? If so, is it worth it for a "plug-and-play"? And what is the fuel economy difference?
Or what is Overkill compared to Intense?
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Does anybody have an Overkill PCM for their Grand Prix GTP (mine is a 2000)? If so, is it worth it for a "plug-and-play"? And what is the fuel economy difference?
Or what is Overkill compared to Intense?
Last edited by Mad Monkey; 04-04-2013 at 07:55 PM.
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