Retarding in general will move your power up in the RPM range.
The reason I retarded mine was because I have heard from numerous sources that there are 5degrees of advance built into the B303 cam. I don't think you'll really see any gain with retarding the E cam, I think it was meant to install "straight up". But then again, I have been wrong on many occasions
I just purchased an anderson N4 cam today, so hopefully that will help out some.
anyone wanna buy a B303 ?
