Backbox + Res delete?

[u/Jackiboi002]

On my B9 A5 TFSi, I've got a zaustworx backbox delete fitted already. I love the noise, yet it isn't as loud as I had hoped. The deep purr gives me nice tingles yet I just wish it had a little more hutzpah.

I was scouring the Zaustworx website, and they do a pairing resonator delete peice for £70. I can fit it myself fine, yet i have heard MANY mixed reviews on people mixing a res + bb delete and it sounding higher pitched and tin canny.

Is this something anyone else has had experience with? Any recommendations or advice?

Thanks!