I've had some really good number on my last tank(considering it was mostly city) and lately on my commute.
The only thing different besides removing the WAI (which was for about 100 miles) is a spark plug mod found here.
http://fueleconomytips.com/index.php...id=31&Itemid=2
I just used the standard NGK plugs regapped at .035 instead of .044 and indexed. These plugs replace the side gapped and index one that were in there. I've got about 350 miles on them. Don't really know how to test this but it sure is not hurting anything and only took about 35 minutes to.
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