So disappointed in my 1st hypermiled tank

[JESSE69]

After my Dashdyno got calibrated, I did 2 weeks nonhypermiled and got 43 and 44 mpg. Then I decided to do a week of aggressive hypermiling. By this I'd do lots of FAS P & G in the city, shutting off at stoplights to prevent idle, and P & G on the hwy from 70 to 60 mph. I had a 53 and 57 mpg drive from work. I avoided a major accident traffic jam to work by going to a side road and then past the jam. Then on Saturday, bad luck - got caught in another traffic jam from a major accident - did 10:20 minutes of idling / slowly moving the car bumper to bumper. This killed my trip mpg down to 39 mpg but with aggressive FAS P & G my total 34 mile 95% city trip went to 46.7 mpg. Then Sunday's shopping - aggressive FAS P & G netted 52 mpg 95% city driving on 35 miles. Driving to work Monday morning, no hypermiling and got only 44.6 mpg.

But my biggest disappointment was I didn't break a 50 mpg tank! After filllup I computed a 45.177 mpg tank! Only 1.177 mpg better than my best nonhypermiled tank! I am so pissed and if my future hypermiling attempts don't break 50 mpg I'm not gonna do aggressive hypermiling!

Has this ever happened to you? - A bad hypermiling tank? Was it the traffic jam that killed me?

If I can break 50+ hypermiled tanks, I'll upgrade either my battery or get a 5 farad capacitor to prevent low electrical surges whenever I crank the starter, - as this usually resets my Dash Dyno trip meter for my hypermiled mpgs. Anyone do this to prevent resets on a Scanguage ? - Or this doesn't happen to a Scanguage?

I drive a 99 Civic HX MT.