Should i put a carbon fiber muffler on a scooter?

Question

i have a 150cc jonway scooter 4 stroke..well i ordered a carbon fiber muffler 335 dollars but when i installed it it slowed my scooter down by 10 mph wtf? it said new big mouth carbon fiber racing exaust...wouldnt u think that would speed it up not slow it down??/ well i dont know i hope someone out there knows about this because i sure dont! thanks

Answer 1

HAHAHAHAHAAHAA

Answer 2

Return the muffler for a new one, usually it would go faster because carbon fiber is stronger than steel and weighs less then aluminum in some cases. also try to get one with similar shape as the original one but made the carbon fiber, I hope it works, cuz it did for me.

Answer 3

Your carb probably needs rejetted to accomodate for the increased air flow.  A higher performing exhaust will allow the engine to breathe/exhale better, which means more air is able to enter the combustion chamber.  While more air is entering the chamber, more fuel needs to be added to the mix to keep the right proportions.

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Answer 4

yea its puttin out to much back pressure now leave it stock