Hey, noob here, I was wondering what the options where to make my catless exhaust quieter from time to time. I was looking for a butterfly valve/cut-out type of project that could resuce noise and be fully open or closed with the flip of a switch on the dash, any help is appreciated thankyou.

Hi folks. The butterfly valve in my right tailpipe is seized in the closed position. As you know, the valve opens by rotating counter-clockwise 90 degrees along a vertical access. I banged on it in the appropriate spot with a hammer and screwdriver, and managed to rotate it about 40...

The Valve in my 330 is seized shut I managed to bend the right side open about 1/4 of an inch, then I finally gave up. I am trying to open it all the way again. Does anybody know how to finally get it open or how to remove it altogether? I have tried WD-40, screw drivers, and hammers. It's not...