Why is my car not that quick with a 6.5t motor in it LRP speedo

[daz75]

I've noticed most of the cars seem significantly quicker down the straight than me. I changed from a 7.5 to a 6.5 but didn't seem to make much difference. I've a b6.2 and its geared as per the manual.

So I'm thinking it could be the speedo settings. I've a few LRP flow works team speedos. So I've checked the settings and weirdly with the instructions dont seem to marry up with the flashes on the speedo. I've checked the firmware and it's set to buggy and the same flashes appear on the other one I have. So maybe I'm doing something wrong any ideas?