db01 and novak 4.5 help

[gordy]

Don't know if anyone can help i had my 4.5 in a BJ4 and the aceleration was nothing short of mental. I've taken the system out and put it in the DB01 and I have nowhere near the same aceleration. It seems to take quite a distance to get to top speed. The diff and slipper aren't slipping and the drive line is free. The BJ4 was geared at 12.19 and the durga is geared at 12.437, am I being really thick and missing something - can someone tell me?