How do I achieve a core sound?

Hello, I have an Audi 80 8V B4 2.0 with 90 hp. From the previous owner a sports exhaust from Kat from Ray is installed. The sound is still too funny to me. I want a core sound that is nice and sneezing during the high tour. When running down, it’s best (if feasible) to get a few bangs (do not have to be really good, just audible) Here’s a sound examplehttp://www.youtube.com/watch?v=TLAFFz4dwV0&feature=related the banging is too exaggerated here but the whole thing should be possible can someone tell me how best to do that and what I need? Ps. please no answers like “You need a stronger engine and more cm3etc.” A buddy had a Polo 6N with the serial machine and it just sounded awesome. Must say it was an ESD attamp. But as I said, STVZO just missed. Greetings Toby