Here is a car to car comparison pre & post EGR mod, except it's the same car, on the same road, in the same conditions.
Pick up from idle in 4th gear (23 mph to 70 mph)
http://youtu.be/rEA2K0NemK4
In only 2 seconds the EGR mod has climbed 3mph, at the exact same point the pre mod car has doubled that and has increased by 6mph and it felt like double the punch too!
After 8 seconds: pre mod @ 60 mph & EGR mod only at 50 mph
After 10 seconds: pre mod @ 70 mph & EGR mod @ 57 mph
ps it's my Video and I was so blown away with pick up I taped it at 582 ODO miles, after the EGR mod I immediately knew it felt slower so I took it back and re ran the exact same test @ 6277 ODO Miles
It's the sort of thing us sad petrol heads do!