Ok, ran that test 2 ways-disconnected the vacuum line and sucked on it to open the egr, engine rpm dropped but did not stall out, then manually jumpered the solenoid to the battery (to also check if the solenoid was working)-same thing, rpm dropped but did not stall out, engine seems to labor at idle with egr open, drops by maybe 200-300 rpm. Anyway the solenoid is eliminated as a problem as well, still (I think) leaving only the dirty intake or ecu, definitely leaning towards the intake at this point, posted this question also to honda-tech and got pretty much same advice-clean the intake. What about replacing it-skunk2?? How much do you gain at the top end, how much do you lose at the bottom end?