polishing inside of plenum/intake?

[jas98]

hey if i was to polish/sand down so its smoothish then inside of teh plenum and the runners on the inlet manifold on me vs v6, would this do anything? like fuel go up or better? power? etc
also the maf sensor and throttle body? polish them or use a little sand papaer
i got a spare one sitting here and wondering if i should attempt to do it

cheers

 

[soop]

See the thread in my sig.

 

[Brett_jjj]

Ive polished the inside of the inlet manifold on my ecotec,it seemed to make it run noticably smoother.I also matched the runners to the inlet ports and plenum so there was no interference to the airflow from them overlapping eachother where they join.Its also worth checking the gaskets to make sure the port holes in them arent smaller than the inlet runner holes,and that they line up properly with no overlap.