Well I'm now going stage 2
The garage that did my pre-cat removal did a great job of blocking the cat with he remains of the pre-cat. Right now I have around 200bhp and a torque curve at the red line which would make a K03 look good
Thanks
@vRSAlex for offering a downpipe
but in the end I thought it's a great excuse for an upgrade. . .
I've ordered a Downpipe & Sports cat from Pipewerx to mate to my OEM cat back
Solving one problem, with more power