You want cooled EGR pull it from after the cat as far back as possible, there will be less carbon pulling it after the cat also. As for me I won't be putting EGR on anything I own, one more system to fail and I am not convinced it helps MPG, everything I have ever removed it from (for test purposes of course) got better MPG without it. My experimenting seems to show that speeding up the burn always helps and EGR slows it down.