Supra Dyno - 1G-GTE

A little video I made of my dyno.
You can really hear the miss through the wastegate around the 3,500-4,500 mark. In the video it sounds like the miss goes away but listening to it in person it was still missing right up to 6,500-7,000rpm but just not as bad.
Would my worn/bad rings cause the miss?
I have put new leads and plugs in and its still there. Maybe a bad injector?

Also when he backs off, is that compressor surge?

Видео Supra Dyno - 1G-GTE канала Hunt Moorhouse