Hey just picked up 2009 zx6r monster edition. Great bike absolutely love it, had a two brothers slip on. Pre muffler and I’m assuming stock headers is on it. Really quiet but sings nicely in higher rpms but I just want the loud song that we all crave and love . Is it ok to remove slip on and just run the open pre muffler? Currently shopping for a full exhaust or maybe just a link pipe that will work with this slip on to the header . But I’m the mean time , curious if I can just run the open pre muffler .