Actual MPG results after EGR blanking

I had heard some interesting claims about how much the mpg would be improved by removing the EGR valve and changing the air filter so I thought I’d measure before and after on my 2003 TD5 90. The mileage was noted after using at least three quarters of a tank, all driving on road,same local roads, no towing, no conscious change of driving style.
Before
Tank 1 31.03mpg
Tank 2 29.15 mpg
EGR Blanked
Tank3 29.09 mpg
Tank 4 30.05 mpg
Tank 5 29.9 mpg
Air filter changed to K&N
Tank 6 30.0 mpg
Not statistically valid of course but bugger all difference in my humble opinion. It does seem to pull more cleanly now though so worth doing.

anatomick said:

Not statistically valid of course but bugger all difference in my humble opinion. It does seem to pull more cleanly now though so worth doing.

Click to expand...

If it's pulling more cleanly, do you think perhaps you were using your right foot a tad more? Perhaps a slight sub conscious change in style?
Even if it doesn't improve it look on the bright side, there no more dirty shiity stuff re-entering your engine