I beleive it stands for evaoprative emissions control system insufficiant. I was driving the car around for the first time ina while all i had done to it was install a CAI, it's not the gas cap because i checked it and it was tight after that i resetted the ecu, one thing i notice is that the car lacks power in lower rpm's. When floor under 4k or so the car pulls but feels slow and choked, if i release the throttle a bit the car gains power or at least picks up speed a lot faster. At high rpm's (4k+) it doesn't really feel this way maybe i can't feel it as much but still doesn't pull like it should. I also read that not having the crankcase ventilation line coming out of the valve cover connected to the intake may cause blowby and reduce power. I reconnected that back up and closed tightly the gas cap and reset the ecu lets see. Any comments help or experiences would really help. Thanks

Im also going to change plugs, the fuel filter and check the compression when possible.