do you know how much the plane is suposed to weigh? i'm just finishing a quest 90 with a 91 FX and a perry pump and a macs pipe i will come in at around 8 pounds..............from what i've been told it should have unlimitade vertical with stock setup. so i think it will have plenty of power with the pipe. i am going to fly it on thurs. and break in and tune of wed. so i will let you know how it flys..........i'm going to a contest this weekend with it also.