The s1x is an awesome cam, anything else intense sells is garbage. I'm not one that supports zzp however their cams are pretty much top notch. I would go with an s1x before an xp (even though i have one...) and the xpz would be the next step, unless you're turbo. I've tuned more cars than all of you, i can guarantee you that, from intense cams to zzp cams, my opinion is first hand experience not hearsay like everyone else, nor am i bias to the cam i actually run. I give out facts that make sense, not facts people want to hear.
