Hard to say for sure. There is certainly more cabin noise than before but I also have mud terrains so it's kind of tough to discern between the tires and exhaust. Let's just say I did an 8 hour drive and although the noise was there, it wasn't really bothersome. The GF didn't complain either so it's definitely tolerable for us. Of course, everybody perceives sound differently so take that with a grain of salt.
There are a lot of mixed opinions on drone with this exhaust. I decided to just bite the bullet since the price was so reasonable and I'm happy with the purchase. If there is anybody in central MI that is on the fence about the MBRP I would be happy to take you for a spin.