kawasaki Z750 exhaust problem
Few days ago I changed my exhaust on my kawasaki Z750 (2004). I removed my old original pipe and screwed a new one, which is totaly opened. It is an almost exact replica of akrapovic, maybe you heard of it form superbike or motogp, but is 40% cheaper. When I done that, I find that machine is not working “properly”. It’s not nothing serious but there is a difference in sound and work of the machine. The problem: the machine has a strange mumbleing sound between 1000-3000rpm. I heard that the problem is in somekind of vacum switch and some ruber hose somewhere around airbox, which are here because of the catalizator in exhaust. And because I removed catalzyed exahust pipe, the machine is not working properly at low revs.
Does anybody know exactly what has to be done so the bike should work properly again.
Greetings from Croatia (central Europe)