Originally Posted by rjd598
I think gtm is referrred to as their full system? I'm not sure I always wondered too. I know gtc is the quieter muffler and thought gt was just the muffler making the gtm the full setup. Is there any ringing noise with just this muffler? Heard it was a problem somewhere
GT is the first version of the exhaust for the M3 by RPI. the differences between the GT and GTM mufflers can be seen by the entrance of the pipes to the mufflers. the pipe enters the muffler at the corner for the GT whereas the pipe enters directly straight into the muffler from the back for the GTM (when looking at the mufflers from the tips). the x-pipe/front-pipes are the same for both applications (and the GTC) for a full system.