Is 3 " ets uicp to big? Wanna get it but think it might be to big an UN neccesary. Any opinion would be Great thanks

 

Im running a 3" uicp because I have the Boomba 75mm TB.
Do I think its necessary? No, but is it convenient to me, Yes. It doesn't make me slower. If you already have it and its set up to what you want, just use it. No need to spend more money to make a 2.5" pipe.
With your mods, respectfully, I see no reason why you would need it.

 

What if planning on gettin fp black down road

 

i think it's a good size!