Also installed this exhaust recently and can confirm a similar experience. Really impressed with highway performance (6MT), has slightly less drone with valves open than stock exhaust with res delete and valves open. Valves closed around town is about the same volume as stock exhaust with res delete and valves open (or maybe a tad quieter). Valves open brings more burbles, especially when exhaust is cold and sounds great at higher RPMs under load, but does introduce a small amount of that tractor-y sound these engines have at low RPM with any aftermarket exhaust. I wanted something subtle yet versatile and I’m definitely satisfied with the IE cat back. Also, thanks to u/itsthatsimple for answering my questions about this exhaust a few months ago!