Lots of things could be sending it into limp mode, not just the DPF.

Have you got a warning light / engine management light illuminated when it goes into limp mode? What does the manual indicate it could be?

Rather than having the DPF removed / remap at a cost several hundred pounds, it may be easier just to do a 10- or 15-mile detour on an open road every couple of weeks to get everything up to proper temperature and enable the DPF to regenerate. At worst, that would cost you under a fiver a month in fuel.

Edited by craig-pd130 on 28/02/2012 at 17:19