I have to disagree. A turbo, by design, is used to increase the volume of air and fuel in the cylinder by positive pressure. A naturally aspirated engine can never obtain the same amount of air/fuel in the cylinder as a turbo charged car, therefor a turbo'ed car will use more fuel by its very nature. This is just physics.
The only way a turbocharged car could possibly get better fuel mileage than a N/A car is if you never spooled the turbo. Of course this would just negate the point of having the turbo to begin with.

 

dont you just hate being right[sm=icon_blah.gif]

jkjk[8D]

 

It's a gift I have learned to live with.

 

lol

 

It's true that you can use less throttle to get moving in a turbo engine but power requires fuel PERIOD. If the AFR remains "safe" the engine will require more fuel because its intake volume is larger. Any cars with a MAP or MAF will do this, if you dont have an air intake sensor like this then the tuning will be bad anyway and you have bigger problems to worry about instead of mpg.

For what its worth I've talked to someone who does have a turbo V6 that tried the grooving of the spark plugs and also the drilling idea. He said it didnt make any difference in performance or gas milage but it improved throttle reponse. I'm not willing to drill a hole in my $2.50 spark plugs because if it ruins them Im gonna be cranky. Someone else should do this and see if it works though!

 

^^^ Our neons have a MAP sensor, but doesn't see the boost due to a MAP clamp or missing link.

 

In my 97 auto with 204000miles, i get roughly 26 city and 30 highway. no mods.

 

i get about 250-270 miles on a full tank of gas....citywide...divide that by how many gallons our gas tanks hold....and.....there ya go!

 

damn boy, not even my stang has mpg that low [&:]

 

Great feedback from everybody. The turbo idea seems like its getting less and less ideal for gas mileage. I haven't been able to find any testimonials about turbo's getting substantial gains. As for the acetone I have read a few things that say that if you run it once it will disolve a lot of junk in the fuel system and then afterwards you will get better mileage, and also that it is very touchy on the ratio of acetone to gasoline. Another site that I have been researching on is www.mpgresearch.com. I have also read up on a lot of ideas about introducing ozone to the incoming air. It seems that ozone is unstable and wants to bond with other molecules, ie gasoline, whereas oxygen itself is stable and doesn't really want to bond with anything. Another thing I've seen a lot about is heating the incoming fuel by wrapping the fuel line around the upper radiator hose or running it through the transmission cooler in the radiator. I would love to try some of these things if I have the time/resources. I think we could get a neon up over 50 mpg easily.