I had a 2017 axys 174 with a silber and it was a great kit. Very clean install and ran excellent. Mine was setup with the 7lb spring so I ran 3 gallons of av gas with it at 6000ft. I also have a 16 with a mtntk kit that runs 8psi and it runs very strong as well. Both kits run great but due to simplicity of install I would do the silber again if I had to. The mtntk kit is intercooled but honestly I think the silber is right there power wise at the boost I run.