i have a 3 port Orion motor with a JP-3 pipe and i have been running this thing with 30/9 byrons since about a week before the Futaba Nitro Challenge and its still has enough pinch to where i cant turn it over by hand the only thing i changed was i put a O.S. speed card on it but i couldnt be happier for the price i paid and the bang i got has to be the best motor for the $ i ran 9:30 mins in one of the mains at the Futaba race

Thanks Joe