to redirect the exhaust flow from the original flow to shorter exhaust flow.
So , like using straight piping without muffler la after the valve open coz the air will go through the new hole.
Hi guys :D ,
Anyone know is that universal air filter like K&N or APexi (Open-Pod) can match with the carburetor engine? for your information, im driving wira 1.5 stock engine. Thanks for the suggestion. B)
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