Holy mother of god...I just creamed my pants. I installed the ERZ HFC's today and omg. The sound is freekn nuts. While I was outside my car...my buddy did a hard pull away and wow...not sure what the words are to describe how sick it now sounds. And I definitely feel a HP gain. I feel the power especially on high RPM shifts; the pull is much smoother and harder going in the next gear (2rd through 6th).
Go to ERZ's web site and order NOW...don't waste any time thinking about it.
BTW - I do not get any hiss (typically with most HFC's) with my Invidia Gemini setup
I will post an updated video tomorrow on my person post (
http://www.the370z.com/intake-exhaus...fc-review.html )