Hehe no worries. Hairbrained ideas are what fuels the future

As far as helping out your in town MPG...get your ALDA adjusted properly and have a good clean air filter. Also making sure your tranny is tip top and not having a bad alignment can help a little.

Anything you can do to help the off idle power and such is actually helping your engine become more efficent and thus helping out MPG numbers. Many believe that tweaking the ALDA to add fuel will hurt you but the truth of the matter is that if you drive realitively consistantly, it will actually help

It helped mine.