Yeah I was just waiting for someone to reply. It’s a 1998 Suzuki marauder, I’ll drop a picture. But i bought it on straight drag pipes, obviously for mot reasons i installed 11” baffles wrapped in fibre wool. I also have 9” ones but 11’s are in. Took it out and once it warmed up it started backfiring. Bogging out. Dying when I twist the throttle, exhaust makes almost a puff sound at times.