Quote:
Originally Posted by jpritche
![I Agree](http://www.the370z.com/images/smilies/iagree.gif) I asked the guys at Z1 when I was down there the other day if it gave you any power, and they said no...
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Weird, these tubes are just like the tubes from HPS, and they do have a performance claim to them... along with others who have dyno'd them...