Here's my 2 cents as a Tri-Oval owner.
1. I was at a dealer a couple weeks ago and they had a set of de-baffled Tri-Ovals on an XC and asked if I wanted to hear them. Of course I did. I was not impressed at all. The sound was "dirty", not a good pitch or tone at all.
2. My bike has been dyno tuned. It would have to be done again if I had my pipes re-baffled.
3. If I'm changing the Tri-Ovals, I'm going to Vance & Hines. IMO they are by far the best sounding pipes on a Victory XC.
That being said, I appreciate what you are doing and I'm looking forward to seeing what results you get on the dyno.
Also to answer your question, I want LOUD and deep, with performance.
2014 Victory Cross Country
2001 Harley Davidson Super Glide Sport FXDX
1999 Ultra Jackhammer (sold)
2008 Harley Davidson Sportster XL1200C (traded)
1971 Custom XL Hardtail Chopper/ Bobber (sold)
2001 Kawasaki Ninja ZX-7R (sold)
1994 Honda Magna VF750C (sold)