CSM Huber

After learning that the NEW fuel injectors "turn off" when coasting in gear, but not when coasting out of gear, I tried it. Sure enough there's a mileage increase shown on the DIC that is greater coasting in gear.

What is really noticeable, is the improvement you get by making sure to get your right foot completely off the gas pedal any time there is a chance to coast and then by taking it easy as you resume speed.

Bika

iTrader: (3)

old news. car manufacturers have been doing this for years. its called Deceleration Fuel Cut Off (DFCO)
you can mess with it in hptuners

Tomtwtwtw

Indeed, it's something that has been done for years, but nonetheless, most people don't have the patience to cost up to a red light these days.

freakta

iTrader: (1)

its just as easy and almost as good to downshift and creat such a huge vacuum that it gains milage

jschatte

if your coasting in gear that can't be good for your throwout bearing

krispy

its fine, you arn't supposed to coast out of gear for safety reasons anyway

CSM Huber

Haven't had one for years....

joeworkstoohard

hmmm, interesting.

laserblue2006

huh....the throw out bearing goes bad when you sit on the clutch for ever....adn coast that way....coasting in gear doesnt harm a single thing...

chris88z24

It's how I drive (usually). I averaged 28mpg on my last tank of gas, all city stop and go driving. Not too shabby eh? Considering the car is only rated at 22mpg city

Only thing it harms is the oil companies pockets becuase you are using less fuel.. rofl

an0malous

ive been tryin to tell neutral coasters this for years on this board.
im glad a few people are finally figuring it out lol.

chris88z24

I've been driving every MT car this way. **** I even do the same with my riding mower when I need to slow down. lmao

an0malous

lol yeah. some people get it.
but theres a scary number of people out there who ride around in neutral.

theycallmechoodeee

where can i find these at ?

chris88z24

Oh I know it, I feel like slapping them sideways when they tell me they do it to "save gas."

Some people think the higher the RPMS, the more gas you are using. That's probably why they do it.

an0malous

people need to really take note of this point too, its very important.
when your on any kind of downslope at all,
if your in 5th, you will find that you often wont slow down at all if you let off completely,
but by keeping a tiny bit of throttle, or being in cruise, you use more fuel than getting off the peddle and letting it go into DFCO.

helps mileage ALOT over the course of a long trip.

D4u2s0t

good job. it's nice to see that there are people willing to learn on the site. so many people are too stubborn, and think they know everything. keep doing it, and you'll be saving a decent chunk of change.

chris88z24

I had a big argument about this on here a while ago where I tried to explain the DFCO theory.. I got shot down and people told me I was wrong. Where are those people now?

an0malous

probably driving a rusted out 200000 mile 94 civic, because their rammed their cobalt up someones ass at a stop sign

chris88z24

rofl

SSRedSC

If you happen to pay attention the next time your in your car for all of the non believers, check your idle when you are sitting in your drive way before you head out. Once your down the road put the car in nuetral and notice that your rpms are most definetly higher than when you are sitting still.

an0malous

it actually doesnt matter what RPMS its at in neutral.
because when your in neutral, your engine is using fuel to idle at whatever rpm
but when your in DFCO, your using NO fuel.

any fuel > no fuel

SSRedSC

I realize that I was just suggesting that it does in fact use more fuel in nuetral at speed vs standing still

nutsandboldts05

I absolutely hate how people will do that to someone else, but most of the time its because it happened to them. I barely participate in many forums now because of that exact reason.

I had no clue about this DFCO AT ALL. So reading this post has informed me of something new, its like gas just dropped a dollar a gallon now that I read this. Thanks a lot to the OP for bringing it up, and to the rest that confirmed.

07BlackSS/SuperCob

i'm assuming the coasting in gear also includes braking in gear as for using no fuel?