Got an 05 s2000 with the aem v2 ems. Between shifts the rpms stay there for a second and goes rich and then drop back down. 4 out of 5 times just shifting and driving normal. Did not do this with factory ecu.

It seems it is really sensitive to current because everytime I roll the windows, top down or when the fans kick on the idle drops but doesn't die. Just a little annoying

Thanks for the help