Wondering if I should richen fuel mixture by fooling with the eha valve? Apparently you can take the valve off, unscrew the flat head screw on the back, turn clock wise with #2 Allen key quarter of a turn and this actually ruchens the fuel mixture. I've already set the duty cycle to 50% using volt reading method. Car runs and all it just seems sluggish at times. Sometimes the car runs pretty quick but I would say most of the time it's slightly unreasonably slow accelerating.