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Author Topic: Exhaust system question  (Read 1070 times)

Dale Genther

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Exhaust system question
« on: May 19, 2011, 01:11:03 AM »
My 2006 Agility 50 has a "tee/open port" in the exhaust pipe a several inches before the muffler. The majority of the exhaust noise comes from this opening. when I put my foot over it the scooter gets much quieter. What is the purpose of this opening?
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bthmtech

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Re: Exhaust system question
« Reply #1 on: May 19, 2011, 01:15:59 AM »
if i am correct this is your emission test port is the hole about 4mm?
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Dale Genther

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Re: Exhaust system question
« Reply #2 on: May 19, 2011, 01:37:18 AM »
I don't know the ID, but the OD is about 3/4 inch, I.E about the same diameter as the exhaust pipe.
« Last Edit: May 19, 2011, 02:31:56 AM by Dale Genther »
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hungryrussian

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Re: Exhaust system question
« Reply #3 on: May 19, 2011, 12:43:21 PM »
yes that is your emission test port it should have a small bolt in it, i'm not sure that it would cause any damage if it were missing but i guess it could cause you to run lean. mine vibrated out as well but it didn't seem to cause any problems, just noise
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'08 Agility 50, 72cc BBK, Naraku HS High Speed Variator, some clutch tweaking, UNI filter with homemade cold air setup, Leo Vince Handmade Titan exhaust, lots of random upgrades i'll never be able to remember.. the look on people's faces when i put a knee down through a curve makes it all worthwhile

Dale Genther

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Re: Exhaust system question
« Reply #4 on: May 19, 2011, 01:24:52 PM »
I threaded a 6 mm bolt into it. Quieter now.
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