Anyone w/ a turbocharger actually try driving for fuel economy rather than like a power hungry maniac?

Spiderman says, "With great power comes great responsibility."

 

I am not sure, but i know in my car i can vary anywhere from 24.xxMPG all the way down to about 17xxMPG depending on how i drive. That is a HUGE DIFFERENCE!!!!!!!!!!!!

The problem with a Turbo is that as soon as you accidentally get in it a little bit, all the conservation is over. It helps the efficient consumption of fuel, but also feeds it a lot faster when you decide to push the tall skinny one down.

 

So with I/H/E, you'll get better fuel effiency but how about if you took out hte cat, and added a testpipe?

 

You'd ruin the environment by spewing noxious gases everywhere. Just leave the cat in or get a high flow cat, you aren't gonna be gaining much in terms of gas mileage by taking out the Cat.

 

17mpg?? On a fit? Dude, you have to be gunning all the time. And 24mpg is still a lot lower than most people's ratings. Personally I avg about 34mpg. And that's pretty modest driving.

 

i get ~34 mostly city driving. you've got to remember,

AT gas mileage =/= MT gas mileage

 

I don't own a Fit.

 

Gonang, you'll have to lose weight. That will help your gas mileage

 

Who is that chick in your sig? Very cute

 

.... ummm. WAY OFF TOPIC THERE BUDDY!!!

 

What do you drive and what's the EPA rating for fuel efficiency?

 

I heard that someone adjusted the nut attaching the steering wheel to the seat and got some real world gains in mpg. Honestly though don't make any mods to your car that you think are going to get you anymore mpg, its not going to happen and the fact that you have more power will cause you to drive it harder than you normally would. Any gains in mpg at that point are lost. Go get a scan gauge and hypermile if you want to really push how many mpgs you can get. Otherwise drive the Fit like it wants to be driven.

Tom

 

SRT-4, and not good.

 

Strip out the interior and all the sound deadening, lose the spare, remove the AC, plexiglass windows, etc. A 2000lb Fit will get a lot better gas mileage than a 2700lb Fit

 

Aerodynamics is important too. I think it's the most underrated fuel saver. That aerocivic gets 95 mpg with hypermiling and it just has pieces of plastic added to it.

The current fit is too vertical and was designed for city driving. At highway speeds, I can barely hear the annoying buzzing 4000 rpm b/c of all the wind noise. You let go of the gas, it goes 80...70...60 in like 5 seconds.

 

That is the weakness of most 5 doors models

 

I'm thinking a mid-length header for the Fit MIGHT make a difference in gas mileage. All of the headers available for the Fit that I've seen so far mimic the stock short-length design. I've only seen one long-tube design, but that was a race-only piece. I think an effectively-designed mid-length header would help with part throttle torque production enough to help fuel mileage by reducing the amount of RPM needed to produce a specific amount of torque. Thus, requiring less throttle to pull a gear from 1,000 RPM to 2,500 RPM without lugging the engine. Of course, it might only be best utilized if the Fit had taller gear ratios. The current gear boxes that are offered in the USDM Fit, both MT and AT, are way short and designed to the get the little motor into the upper RPM range quickly to build torque easily, thus the need for the short runners on the OEM header.

If I get bored in the future maybe I'll try to build a mid-length header to try out my theory. There seems to be enough room in the engine bay to fit one while still connecting into the stock catted down pipe. A 4-2-1 would probably be best for torque production from what I can tell.

Oh, and with turbocharging, it would be hard to make any kind of improvements in fuel mileage with the stock 1.5L displacement. To get better fuel mileage with a turbo you would have to swap in a smaller motor, of say 1L displacement along with the turbo. So, you would essentially get the same, or slightly higher, power and torque to accelerate the car at the same rate as the 1.5L motor, but at cruising speed the smaller motor would be using less fuel to maintain the cruise speed (assuming that it was using no, or moderate, boost levels to maintain the cruise speed). It's kind of the same principle behind the Hybrids. Use a smaller ICE motor and assist it during acceleration with an electric motor. Although, the real hypermilers have found a way to use the electric assist in better, more efficient ways.

 

If you do it, please update!!

 

Add a ScanGuage II to your Fit to get more info on gas mileage, etc.

see
ScanGaugeII - Trip Computers + Digital Gauges + Scan Tool

Car data is cool....

 

absolutely. seeing your mpg REALTIME definately makes you mileage-conscience.