Stage 1 upgrade help

[iriegnome]

I am just getting into upgrading my 2009 from stock. I have added the NCY CDI as well as 5.5g sliders, but it seems like my performance got worse, not better. I was really hoping to boost just a little. 
My top end speed was 37mph, but now it is only about 32. Not exactly sure what to do about that... Any guidance would be appreciated

[Rudy]

You'll definitely want to install heavier weights. I actually mixed the weights on mine; also important you should replace the variator as well if you did not already with the new sliders .