I've been looking at the Bears DVOA. I know the polite thing is too blame Cutler for everything, but the Home Road Split is the follwing

Defense

Code:
Team	 Home DVOA	Rank	Road DVOA	Rank	Total DVOA	Total Rank
CHI	27.90%	32	-4.90%	9	6.30%	23
The 23 ranks of differnce between home and road is the worst change in the League. The best homefield advantage in Defense goes to the Colts.

On Offense
Code:
Team	 Home DVOA	Rank	Road DVOA	Rank	Total DVOA	Total Rank
CHI	10.70%	10	2.20%	12	5.70%	14
On offense, the team has performed about the same on the Road as at home.

Of interest, the variance between hom/road splits in offense and defense are smaller for the former, and higher for the latter. Offense is more consistent than Defense.

Now, this analysis is colored by the uneven split (5 road, 3 home), and because opponent adjustment by week 9 are not still at 100%.

The crowd needs to start showing up, I think...