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Jetting with new RS-2

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I recently bought a TT 39mm FCR-MX and just picked up a new RS-2 full exhaust. The insert measures 1 5/16", certainally not the small "pototoe" nor is it open. In 0 to 500 ft, should I jet with a 160 or split the difference with a 155 and jet it at 158 ??

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yosh only makes 1 insert.take it out and look at it.it is the potatoe.the oepning of it is much bigger than the insert itself.

155 main jet.

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Thanks Eddie,

I just took the insert out and it maintains itself a 1 5/16" diameter throughout with out any necking down within the screen or exit to the tip. Did Yosh come out with a new insert for the RS-2 ???

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I will post a picture tonight, however mine doesn't look like this at all. The screen stays the same diameter as the larger exhaust tip.

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p40329597ld.jpg

Hi Eddie.

I have one of these in my Ti system,do you loose much power with it left in?

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Eddie, As I mentioned the inside diameter maintains at 1 5/16" throughtout. The insert does provide some sound attenuation. The device does not neck down as the one in your picture. Jetting ?

Thanks

Brad

1.jpg3.jpg

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that is just a spark arrestor.it is bigger r and doesnt have the perforated tube inside it.

i say split the difference.158.

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