I could not be happier with this purchase! After already having an RPM Motorsports pipe with the Tial flange and MAF sensor relocation for my Solstice GXP, I had a friend cut that flange off and weld the Turbo XS flange on. This thing works incredible and I love the sound!

I am curious what spring these ship with because I'm almost thinking I need a softer spring than the one that came with the valve for my application so any response to that question would be fantastic.

As always, very please with my purchase from Performance Autowerks. I've been using you for a long time and have not been disappointed yet!