After running out of fuel recently I have decided to keep track of my actual MPG for practicality sake and for curiosity. I am in the process of repairing and making my Fuel level gauge accurate as well. My first refill since recording the mileage after the previous top up has me getting 28.8 MPG in my Special Edition suby converted Fiberfab Speedster. The engine and ECU are the same as the 2007 Impreza, the official fuel economy shown for the Impreza is : City 19-23 Hwy 25-29. My car is lighter of course and not powering all 4 wheels and an extra transfer case so it seems reasonable for me to be getting 28.8 MPG. All the driving during this time was on rural Hwy. and light city, no expressway, Just thought I would share this info. and a few pics of my car for the one or two newer members that haven't seen it,,LOL. 

speedster fun view 1speedster 6-6-2020

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I am not sure. I hate to say but Carey and the gang installed it 2 years ago when they did my Suby conversion and it has never worked. I have been driving the wheels off the car and haven't tackled the not so glamorous job of fixing the fuel gauge. It was a new gauge and Carey gave me a few suggestions to try. I may even mess with it tomorrow. 

Yeah, that vw tank is a pain, I found the bottom on my old IM as well.   A better guage would help and as to your subie gaz mileage I think I am in that ball park as well, but, I never actually measured it but since my tank is a 15 gal USA I have not found the bottom on this one yet.

Last edited by IaM-Ray

I love running my 2.5L variable cam lift engine up into the high 5000rpm range pulling hard in 3rd gear, you can feel the secondary cam profile kick in and open up the other intake and it is a high lift lope profile and you can feel the power surge up. I think the engine design is awesome. The engine runs super smooth and sounds great. I really couldn't be happier. 

Very cool Jimmy. After I ran out a couple times in my original Spyder, I carried a 1 gallon can in the frunk, full of course!

In a Spyder with the stock Bug tank, you can't fill it all the way with the center cap. I get about 160 miles on a tank on the highway. I get about 130 miles around town and doing a lot of "brapping".

I think one ride to Carlisle maintaining 80 I calculated 32mpg. But it usually ranges around 22-25. It will go down to 18 if I'm really on it, banging off the rev limiter at every shift.

I have an EJ255 turbo in my coupe, with a (supposedly) 16-gallon fuel cell, which physically measures 14+ gallons.  On a road trip, I get low 30's (32-33 mpg), low-mid 20's around town.  When I first got the car, I would routinely travel with a 1-gallon plastic gas container, secured in the frunk, until I learned how to read the fuel gauge.  I never felt comfortable with a portable fuel container, and stopped carrying it within a few weeks.   

I notice a few people carry some extra fuel with them in case of emergencies. Has anyone tried the engineered fuel available from Home Depot in their cars? When you click the link disregard the $71.00 four pack price. It is available by the single gallon. I use it in all of my lawn equipment that isn't 2-cycle and the stuff works very well. Equipment starts easier than with pump gas. I also use the TruFuel 2-cycle stuff and that also works extremely well in my 2-cycle equipment. Especially since it can sit for weeks between uses.

trufuel-oils-lubricants-additives-6527206-64_1000

 

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Last edited by Robert M

I Don't have any room in my Frunk to carry a can of fuel the radiator takes up that space. My battery is in the drivers side wheel well and it is a tiny high powered ATV battery, it has done a great job starting my car without any trouble the past two years. I doubt that I will run her dry again now that I know the tank is only 9 gallons. 

Speedster Conversion 33

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@Robert M posted:

I notice a few people carry some extra fuel with them in case of emergencies. Has anyone tried the engineered fuel available from Home Depot in their cars? When you click the link disregard the $71.00 four pack price. It is available by the single gallon. I use it in all of my lawn equipment that isn't 2-cycle and the stuff works very well. Equipment starts easier than with pump gas. I also use the TruFuel 2-cycle stuff and that also works extremely well in my 2-cycle equipment. Especially since it can sit for weeks between uses.

trufuel-oils-lubricants-additives-6527206-64_1000

As you know @Robert M, I'm a Midwestern hick-town hard-head.

The idea of paying nearly $20/gal for gas has always stuck in my craw, and I refused to do it-- even when the best man in my wedding (who now owns outdoor power equipment centers in 4 towns) recommended it for my 2-stroke Stihl trimmers, tillers, edgers, blowers, etc.

Instead, I'd buy a freaking carburetor for at least 50% of my eleventy-billion little engines every single year. Finally, a couple of years ago, I relented and bought a couple of gallons of 2-stroke "snooty-gas". I've not replaced a carb since. I steel myself and buy it whenever I'm feeling rich and famous now.

I don't do it for the 4-strokes though. For the mower, snow-blower, pressure washer, etc. I get gas from the one local ethanol-free station-- I buy 93 octane and add Sta-Bil, whether it's winter or not. And do you know what? I don't have any carb problems with those either.

If I were carrying an extra gallon for emergencies (and I don't, because I have a working trip odometer), it'd be a gallon of the same elixir, because I'm a tightwad and the $10+/gallon would really stick in my craw. What would invariably happen would that gallon of gas would ride up there for 5 years... and by the time I really needed it, it'd smell like turpentine and have the consistency and color of rancid honey.

What you're proposing has merit, should one feel the need to carry emergency gasoline.

Last edited by Stan Galat

I’m with you on all that Stan but here in Kommie-fornia ethanol free isn’t an option unless we buy race fuel and that’s a lot more money. I offered this as an option because being engineered fuel it’s supposed to last a long time without going bad. I use my trip odometer as well but I’ve pushed it a few times and guessed wrong. Lol

The wife and I took my Suby coupe on a nearly exactly 300 mile country cruise Saturday evening and burned 10.3 gallons.  Plus the check valve in my fill neck broke so I know I lost some raw fuel on hard left handers too :-)   

We're lucky here re: ethanol. We live in the southernmost part of the county. It still allows ethanol-free gas, albeit 91 octane. I run this in ALL my lawn equipment and in my Bimmer bike. They ALL get Stabil in the fall. 

The Spyder gets 93 octane Sunoco with the unfortunate ethanol, and also Stabil in the fall.

I've replaced exactly zero carburetors and had exactly zero problems.

Unless you want to count the 24 year-old chainsaw that eventually ate it's lines. I replaced the lines($7 lines, filter, clunk, air filter foam, and a spark plug). I got no joy, then tossed it. It had a LONG and hard life of occasional use and putting it away wet. The replacement is fancy, it has rubber engine mounts, to keep me from shaking I guess.

There is zero chance of me buying a $20 gallon in a can.

I am able to buy Shell premium up here, with zero ethanol.  I use that in the Speedster and my leased Subaru STI.  If there were a station closer, I would also use it in all my lawn equipment. 

So far, no issues with lawnmowers, weed eaters, chain saw, etc. using ordinary premium fuel.  I drain the fuel out of these items each time they are put away for the winter.

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