Does anyone have any experience with this y-pipe? Good fitment? Weld quality? Performance? Any feedback would be appreciated.

 

I sold one that I had (never installed) to a local Z owner and after checking back with him several months later he said he never had problems with it. He never dynoed it but said he could "feel" a difference.

I have a Meagan Y-Pipe which is almost exactly the same in design and quality and I like mine.

 

i had gruppe-s/helix
it cracked
they said they would replace it
they never did..
i am out a few bills and they dont really care =*(

 

Your best bet is going with a JIC. It has less bends then the Gruppes, NISMO and Fujitsubo meaning it is less restrictive so you should see better gains with it.

https://www.mynismo.com/products/?id=5650