yep. when the eact is on, and the rpm are above 2k its surges 1-200 rps. also my rad fan is ALWAYS on when the eact is on. even when its on heater. it didnt do this before. this started after one of my coolant hose claps failed. i dont know what one it was but it was by the oil filter. its sprayed all over the rad fan and that general area. thats about all the info i have.