he said it wasnt getting enough air in at top end, he said mainly because the air intake is at the back and that he couldnt get the blower down there..
i dont know how true it is but thats what he says..
he said it pulled very very very well from bottom to mid and up but died out quick top end...
ill let the guys in the know tell me how good/bad this graph is.

p.s. he measured in 4th gear at the wheels.
ive not got the manifold on yet so its standard bar the ported TB