i've researched alot of stuff about egr's and emissions and my opinion is to leave it alone simply because our ECU's are programed with egr/emissions in mind. If you got a JDM ECU then you could remove it with no problem, considering they didn't run any kind of emissions control. Again this is my opinion, take it what you will :icon_bigg. I know i'll will have a working egr system on my engine.