just had a look in my dyno folder . Here's a couple of runs .
1 is modman no filler or spacer
2 is modman with filler with/without carb spacer .
The only time a really raced it was without filler if i remember correctly .
This might help Dizuster as well .

Tex

PS dont worry about HP curve , was always the same no matter what induction or ET car ran . It seemed to hit the converter stall speed and show no more