Ok so i had to get on here and say that i now have about a gallon on my tuned .21 and at first was happy with the motor i was running a jp 2 pipe and i felt the bottom end was awfull so this weekend i switched to the dynamite 086 and all i can say is im not happy anymore im completely in heaven this mill has so much power it unreal and 12 minutes run time with the 6 mm restrictor also temps are starting to drop and its really coming in to its own so i dont know if the jammin pipes bog this motor down or what but the dynamite pipes are a dream for this engine