Cat removal?

[Earendil]

I went on the dyno before and after I removed it +10hp

Might your old cat have been partially plugged? What number did you start at and end up at?

[Wschnitz]

Nando. Removing since its a collectors car and no longer requires emissions. Idc about hp or whatever, its just not needed and thought I would take it out when I put on a new muffler. And who pays a shop to do your shit? I mean really? Might as well throw your money away.