I just ordered the Prodesign foam filter set up for the Z. Anybody tried this on their's yet? I heard good things about it for the Raptor. Only thing I am not sure about is that you supposedly have to use the Prodesign foam filter. Can't use a Uni or Twin Air.

Will I have to rejet if this is my only engine mod so far?

 

With no lid or snorkle you definitely will have to.

 

The Pro Design foam filter is made by uni. As for rejeting, it depends if you remove the cover and/or add a pipe.