Honda VF1000F2 Collector Box Delete with 3 Mufflers Comparison

Quick video showing how deleting collector box changes the sound of the V4 engine. 3 different mufflers tested.
After deleting the collector box I get 6.2G vs 5.8G maximum acceleration. I also noticed a torque loss below 5k RPM on 5th gear but the bike still pulls from almost idle easily.
I am very happy with this modification. I have already run this setup on my F1 and I missed the sound and the response to the gas.