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Auto exhaust brake

Pizziola29

Pizziola29

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The one that goes green when you hit exhaust brake twice. Does anyone use that on the regular day to day surface streets driving? This will not cause issues of truck right?


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Exhaust break is good on the turbo.
The additional pressure helps blow things out.

Standard mode is always on on,
then the auto mode it comes on when you break.
Is that what you were asking?
 
I believe it says in the manual that “auto” (green) in essence senses the amount of exhaust break needed based on current conditions, where as the “on” (I think it’s a yellow indication) gives max exhaust break regardless of what’s required.

I don’t believe either mode is “always” on. The way I understand it is you have to select on (max) or auto.

I don’t have enough experience or knowledge to know what the effects on engine / turbo longevity are.

Page 148 and 149 of the manual.
 
On means it activates when you let off the accelerator....auto means it activates when you push the brake pedal....no it won't hurt anything....use it always when towing...partially when driving unloaded....
 
I haven’t used the automatic feature for quite awhile, but as I recall, when in automatic mode the exhaust brake when coasting like down hill, the exhaust brake engages any time the vehicle speed gets up to the speed when you hit the brake pedal. It worked great on long down hill grades where the percent of grade changed from steep to less steep And back to steep.I hope this makes sense.
 
IndyRamDRW said:
On means it activates when you let off the accelerator....auto means it activates when you push the brake pedal....no it won't hurt anything....use it always when towing...partially when driving unloaded....
Click to expand...

Thanks all. This is perfect.


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I always run auto, it helps the turbo by exercising the vanes/nozzle ring in the turbo, without running the exhaust brake it won't move the vanes to the extremes of travel, which could allow soot build up in those end points and then when the exhaust brake is finally used it potentially could hang up, there is no hard evidence of this but it makes sense.
 
I was thinking about this the other day, and this seems like the perfect place to ask. Is there a way to have the exhaust brake always set to auto without having to press the button every time I start the truck?
 
Darmichar said:
I was thinking about this the other day, and this seems like the perfect place to ask. Is there a way to have the exhaust brake always set to auto without having to press the button every time I start the truck?
Click to expand...
Yep some tuners allow that feature other than the you are SOL
 
Darmichar said:
That's what I figured. Guess I'll have to look into AlphaOBD to resolve all the minor issues I have.
Click to expand...

AlfaOBD won't enable that feature.

It (and Tow Haul) will stick if you leave a trailer plugged into the 7-pin, but that's about it.

You can build a dummy plug 7-pin but that will also then disable the rear park sensors.
 
Brutal_HO said:
AlfaOBD won't enable that feature.

It (and Tow Haul) will stick if you leave a trailer plugged into the 7-pin, but that's about it.

You can build a dummy plug 7-pin but that will also then disable the rear park sensors.
Click to expand...
Thats not a guarantee they dont always stay enabled either
 
Firebird said:
If my truck is running, exhaust brake is full on
Click to expand...

Does anyone have any real empirical evidence this does anything beneficial?

Not implying everyone’s anecdotal evidence isn’t correct. I’m a diesel rookie, so I have no idea one way or another.

Just curious if it’s more of a personal preference thing, or actually beneficial for the longevity of the engine.
 
iflyskyhigh said:
Does anyone have any real empirical evidence this does anything beneficial?

Not implying everyone’s anecdotal evidence isn’t correct. I’m a diesel rookie, so I have no idea one way or another.

Just curious if it’s more of a personal preference thing, or actually beneficial for the longevity of the engine.
Click to expand...
Here is one video explaining the basics
And 2 links to more in depth in that video summary;

 
iflyskyhigh said:
Does anyone have any real empirical evidence this does anything beneficial?

Not implying everyone’s anecdotal evidence isn’t correct. I’m a diesel rookie, so I have no idea one way or another.

Just curious if it’s more of a personal preference thing, or actually beneficial for the longevity of the engine.
Click to expand...
Keeps the VGT turbo moving which is good to keep it from cakeing up with soot also saves your brakes
 
Also helps warm the truck in the winter along with the cruise for high idle..
 
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