Anybody used a die grinder to polish and port (sortof...the best you can do with a die grinder) the intake plenum? My friend and I did it on his turbo eclipse 1s gen and it actually felt like it made quite a difference, but I don't know how a Honda plenum will act. Please give feedback if you have experience with this. Thanks!

 

I would use a Dremel...that would probabaly be abit more forgiving..die grinder is alittle harsh i think..probabaly depends on what type of wheel you are using. But i have heard of mostly is like dremel and the air powered rotary tools.