Sounds great, I have a similar setup (Slip On + MadDad) and sounds just about the same. The crackle and pop (in valves open mode) is intoxicating, you captured it well here! Enjoy!
PS: Did you do before and after dynoes? I did and will post results soon
2011 BMW E82 1///M: AW, all options; Renntech, Akrapovic, Forge, P3, RevoZ CF bits, many mods
1988 BMW E30 M3: Lachssilber on Silver, Dinan S14, 17' BBS rims, stock
2016 Porsche 981 GT4: Sapphire Blue, Factory bits, Xpel, stock
1998 Porsche 993 C4S: Zenith Blue, last aircooled widebody, Bilstein PSS10, Fister exhaust, mostly stock
2008 Audi B7 RS 4: Sprint Blue, Audi Exclusive Euro Bucket Interior, Premium+Titanium, many mods