So, I've had the pleasure to own the Eisenmann heritage rear section + nonresonated center pipe for over 1 year now and it looks and sounds amazing (when it's not causing the below problem which unfortunately always come up). The problem is, the valve flaps makes a weird high pitch steel metallic vibration noise at around 3k RPM (cruising at that RPM would prolong the noise
). It's been doing this ever since after the 1st week of install and still continues. I brought it to both EAS and Supremepower to figure out whats up, but they were only able to provide temporary fix. So could this be a defective rear section that I got here? If it is, do you guys think I could still get it replaced?
