I Have An Sr50 And I Love It, But Ive Been Going Pretty Slow On It As It Is Restricted, And All The Parts Are Factory Parts, Including The Exhaust. Ive Heard That The 09 Model (Which I Have) Has Some Sort Of New Exhaust Part Making It Harder To Derestrict, And I Dont Have Enough Money To Invest In A Race Pipe. Any Tips? Pleaseeee. Cheers, Luke.