Using DFCO to increase your MPG - Toyota Yaris Forums

Marthos · 08-04-2009, 06:38 PM

Lets make this simple.

DFCO is for slowing and/or stopping the car,

If you need to stop at the bottom of a hill, or you want to go slower down a hill, DFCO is for you.

Start down the hill, Auto Trans people may need to tap breaks or even downshift into 3, Manual people just let off the fuel pedal.

The engine will start to try to slow the car, at this point your not using ANY GAS (DFCO).

When at or near the bottom apply brakes, when stopped put trans back into D (which is really OD). If you were just slowing the car some, just pop it back to D and hit the go pedal!

You saved gas.

If you were to bump the car into neutral, all the stopping would be on your brakes and the engine would Idle (use some gas) all the way down.

If you need to coast after the bottom of said hill, DFCO is not for you! Coasting on flat ground requires forward momentum, DFCO Scrubs forward Momentum.

If DFCO slows the car to much and you find yourself back on the Go Pedal before the bottom, you are not saving gas.

DFCO stops your fuel injectors from injecting fuel into the cylinders.

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08-04-2009, 06:38 PM	#11
Marthos View User's Garage Drives: 07 3Dr LB Join Date: Jul 2009 Location: NEPA Posts: 58	Lets make this simple. DFCO is for slowing and/or stopping the car, If you need to stop at the bottom of a hill, or you want to go slower down a hill, DFCO is for you. Start down the hill, Auto Trans people may need to tap breaks or even downshift into 3, Manual people just let off the fuel pedal. The engine will start to try to slow the car, at this point your not using ANY GAS (DFCO). When at or near the bottom apply brakes, when stopped put trans back into D (which is really OD). If you were just slowing the car some, just pop it back to D and hit the go pedal! You saved gas. If you were to bump the car into neutral, all the stopping would be on your brakes and the engine would Idle (use some gas) all the way down. If you need to coast after the bottom of said hill, DFCO is not for you! Coasting on flat ground requires forward momentum, DFCO Scrubs forward Momentum. If DFCO slows the car to much and you find yourself back on the Go Pedal before the bottom, you are not saving gas. DFCO stops your fuel injectors from injecting fuel into the cylinders.