Thanks Stephen..
Yeah, I realise the issue is flogged to death on other forums but I'd like to try and get as much information gathered on this site as I find this one the best due to the personalities and the friendliness.

I have the 3" exhaust and the blocked EGR. I've read other opinions that say there is a vast improvement in day-to-day driving as the chip gets rid of the turbo lag that diesels suffer so much from. Of course, there's the "towing" aspect of it and the added torque must be great.

Last night I found a chart with the power gains for the patrols. I think it was on the DPChip site but I can't find it for the life of me. For the money I have to lay out for a chip, the power gains didn't really seem worth it.