ORIGINAL: jason
I would pull the thermocouple out so its in half the length it is at the moment. I would also get the lead from Wren and see what the max temp was during the accel, my guess is that it is slowing the accel down due to high temp.
I doubt it could be anything to do with the tank install if it gets to full power quickly on the ground.
Jason
Jason it looks this is one of the ones that will have a surge or lack of air while flying.
my best guess is that it has not enough fresch air when flying and starts sucking in hot air while accel.
he said him self as soon he takes off , at some distance he has lack of power..
@ do you have big enough air intakes?>
the ones on the side are NOT enough.
you need to make naca ducts or screens directly above the Inlet.