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Old 07-07-2014, 06:05 PM   #51 (permalink)
backpacker3
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Join Date: Feb 2014
Location: Michigan
Posts: 384

Homer - '02 Pontiac Sunfire SE
Team Pontiac
90 day: 30.05 mpg (US)
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So I was reviewing some of the info from my trip and here was the good news, the total distance of the trip required me to get slightly more than 30 mpg to make it to my destination with one tank. Which I did. I got 33 mpg on the way down and I also made it back on one tank as well even though it was a bit of a longer drive back because of traffic and having to drop a friend off which added a bit more distance and an extra passenger and we were using the AC almost the whole way home.

All of that has me pretty confident in what kind of mileage my car has to offer so here are some things I'd like to get done soon.

Instrumentation, I've been going back and forth on this because I'm working on a OBDuino project but I've decided that in the meantime I need something to work with to get some baselines on a few different things.

Gap sealing, there are some pretty big ones I can get rid of around the headlights are the biggest ones but also the front fog lights and a few other spots.

Rear belly pan, I've got some ideas for this and it should be pretty easy due to the design of the spare tire space in the trunk. I will need a new muffler for this but I've found a smaller replacement that actually sounds good and isn't that loud at low rpms. The muffler will also let me take the heat shielding off for the current exhaust which will be a little bit of weight reduction too.

Replacing the missing wheel liner, I broke that when I changed the serpentine belt and all the junkyards around here want me to buy a whole fender to fix it. I might have sourced one so I'll see if it works out.

Cleaning, I want to get my engine bay cleaned and get the rust off my brakes as well as a few other things like that.

Overall I think those things could get me to 45 mpg which is close to my 50 mpg goal. I'm just going to keep picking away at them and see what I get though.

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Aiming for 50 MPG from an automatic.
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