Titanium Yoshi?? Main jet?

[TREDZ71]

I have a full Yoshi titanium exhaust that I just installed on my stock '04 TRX450R.

I think I may have an issue with jetting.

For those of you who have this setup, what main jet are you running?

thanks.

[bwamos]

Sparks reccomends a 190 main for their 450r pipe. The Yoshi should have very similar flow characteristics.

Hope that helps a little. That of course is with aftermarket filter, and no airbox lid, or a punched airbox lid.

[TREDZ71]

Yoshi says to leave the airbox and jetting stock. Then, they say, "for improved performance" use a 145 main and remove the airbox snorkel.

I guess I'll try the new main jet.