hdi gear ratio seems well out

[Adam.M.Penny]

Just bought my first hdi on friday, at a bargain of 200 quid, sorted all the little bits out, and it flew through an m.o.t.

Took it on a fair long drive, and realised the ratio on the box seems wrong, in 5th doing 70mph, its revving at 3.5k.

I spoke to a mate of mine whos got the same car, and at the same speed, its sat at 2.5k.

I was thinking it could have had another box put on it, but I wasnt aware of any other box apart from the 1.9 xud that would fit, and I cant see that the xud box would make that much difference.

Any help appreciated thanks, Adam