I have the Allard EGR delete kit on my 130 PD and it made a fair bit of difference to the car, it was like a mini remap. The car ran more smoothly and seemed to pull a lot better from low down in the rev range. My EGR was pretty clogged up when I took it off so if yours is cleaner then don't expect as much of a difference. The kit is extremely easy to fit and is excellent quality.
The only thing I will say about the kit is, the silicone elbow they provided didn't fit (57mm-57mm), so initially I had to cut the metal end out of the standard boost pipe and use that until I could get a Samco 90 degree 57mm-51mm reducer.
Also on my 2004 year car the EML came on after fitting the delete kit. I had to take it to my local remapper the get the EML switched off (basically told the ECU the car no longer has an EGR) and had it remapped while I was here lol.