....BUT:As you know, I have now a (pretended copy of) Akrapovic (less and less sure the more I look at genuine Akrapovic mufflers!) on my 200cc. bike. At first, it was fitted by Hien Motos on a mild steel, black painted header pipe, of a rather bad design (too short radius elbows) and finishing where it connects to the (apparently) big Akrapovic intake with a large flat piece to fit in this intake but without increasing the diameter of the header pipe. The sound was excellent (with db. killer) and the revving-up and power of the engine a pleasure!
Then, as I did not like not the materials neither the aspect of that header pipe, I had one made at the same place as yours, but with a three stage enlargement starting underneath the bike, in order to fit with a big pipe into the big intake of the (pretended) Akro!
Lost a lot of power!!! Now I have a "hole" in my acceleration, and have to open the throttle more for the same result!
The thing is that this big intake of this muffler is a dummy: there is a diameter reducer inside, right after the big intake. The result is that I have now got a "chamber" between the normal diameter section of the header pipe and this reducer in the muffler, and that this chamber has not got the right resonance hence the loss of power. I shall then have to have that modified, starting perhaps with taking off the diameter reducer inside the muffler (and will try without the db. killer too...?) , but I may also have to fiddle with the diameter of the header pipe, the position where the increase of diameter starts, etc....etc.... I may even, in the end, try other mufflers, or get back with the black steel constant diameter up to the muffler (in stainless steel) fitted inside the increased diameter one, just for the look!
Ridiculous, isn't it?
With Joel's FFE, yes: it may rust and simply have to be properly re-chromed, but this guy undeniably knows his stuff (better than Mr. Haryono Adigunawan of automotivespartsshop, for sure!) and I really trust that his FFE is the best available design at the moment....for the 153/ 180cc. engine.
For our crazy 200cc.: just keep on experimenting!


), what header/ muffler yo have got on your "FZ-20", and what extras and other leftovers you have too.
i mean smell is fine and normal. but if its heavy and if you see SMOKE then its serious. plz get it checked soon.

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