6.7 question for a friend.
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6.7 question for a friend.
My budy has an 08. He is looking to get a programer to shut off the egr stuff. He is going to keep his stock exhaust for now. Wich programer? Smarty jr, Does this shut off the egr?
Thanks,
Justin.
Thanks,
Justin.
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From: Home: Kaplan, LA - Pipelining In: Pecos, Tx
It was debated a while back and Marco chimed in that a better method than the unplug would be to just remove the plunger from the EGR actuator motor and replace it, leaving it plugged in. This would effective disable the EGR system and not derate the power any.
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Smarty Jr will do exactly he he wants, but he must also do the exhaust deletes.
It was debated a while back and Marco chimed in that a better method than the unplug would be to just remove the plunger from the EGR actuator motor and replace it, leaving it plugged in. This would effective disable the EGR system and not derate the power any.
It was debated a while back and Marco chimed in that a better method than the unplug would be to just remove the plunger from the EGR actuator motor and replace it, leaving it plugged in. This would effective disable the EGR system and not derate the power any.
I have heard others ask about simply being able to remove the plunger and not have any issue and the comments I've heard are that this would set off other codes instead or addition. It would be awesome if one could remove the plunger and leave everything connected, not get a CEL and yet not have the EGR sending smoke into the motor...
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I never heard that Marco suggested the plunger pull.. I remember guys just plugging off the tubing with the frost plug and it would set off multiple codes and derate. Unplugging the EGR seemed to just disable the system with one code and I didn't notice any derate.
The S version of the Smarty/Jr. will disable the EGR through programming and not have to do the full deletes (ME version).
The S version of the Smarty/Jr. will disable the EGR through programming and not have to do the full deletes (ME version).
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From: Home: Kaplan, LA - Pipelining In: Pecos, Tx
Gentleman,
A few MSG's back , Lil Dog provides and rather good describtion how the exhaust gasses in the combustion chamber are supposed to work. Yet, one thing left out of the picture is the fact that any diesel engine is a lean burner by working principle. Means that there is always more air than needed for the combustion in the cylinder. Burning lean ( besides other factors like for example the injection timing ) is what raises the temperature in the combustion chamber thus produces NOx. For this reason oxigen poor exhaust gasses are routed back into the cylinder through the EGR in order to replace the oxigen and thus lower the combustion temperature. So far so good. Now we got the complete picture about the combustion process with the EGR routing exhaust gasses back into the intake.
BUT then...where does the mileage gain come from?
Well, the answer is rather simple. When you disconnect the EGR the ECM derates the power of the engine! Less horses to feed, better mileage.
On my dyno, the stock truck is somewhere between 255-260Hp. Simply unplugging the EGR the power goes down to 170-175Hp. That's been true with ALL the different software revisions since day one the 6.7L has been released!
Nobody ever mentiones the loss of power...
Sorry to bust this urban legend about simply unplugging the EGR!
Nothing is lost ! Just go onto our website and read the instructions we provide to delete the EGR. Simply remove the actuator from the EGR motor and plug the cross over tube.
Voilà! No Egr, no codes AND full power. Of course, I doubt that you'll see any mileage gains at all done that way.
Marco aka Mythbuster
A few MSG's back , Lil Dog provides and rather good describtion how the exhaust gasses in the combustion chamber are supposed to work. Yet, one thing left out of the picture is the fact that any diesel engine is a lean burner by working principle. Means that there is always more air than needed for the combustion in the cylinder. Burning lean ( besides other factors like for example the injection timing ) is what raises the temperature in the combustion chamber thus produces NOx. For this reason oxigen poor exhaust gasses are routed back into the cylinder through the EGR in order to replace the oxigen and thus lower the combustion temperature. So far so good. Now we got the complete picture about the combustion process with the EGR routing exhaust gasses back into the intake.
BUT then...where does the mileage gain come from?
Well, the answer is rather simple. When you disconnect the EGR the ECM derates the power of the engine! Less horses to feed, better mileage.
On my dyno, the stock truck is somewhere between 255-260Hp. Simply unplugging the EGR the power goes down to 170-175Hp. That's been true with ALL the different software revisions since day one the 6.7L has been released!
Nobody ever mentiones the loss of power...
Sorry to bust this urban legend about simply unplugging the EGR!
Nothing is lost ! Just go onto our website and read the instructions we provide to delete the EGR. Simply remove the actuator from the EGR motor and plug the cross over tube.
Voilà! No Egr, no codes AND full power. Of course, I doubt that you'll see any mileage gains at all done that way.
Marco aka Mythbuster
Not calling you on it J, just sharing the info.
Its a toss up situation. According to Marco, unplugging will get you the milage gain, but derate the power. Removing the plunger and blocking the tube will keep the power, but no milage gain. Both reduce regens.
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Yes I remember this thread.. However, Marco's suggestion for the EGR delete assumes ME configuration. With the ME software you do get the engine derate, I don't remember with the stock engine program if it was tested to get the same derate.
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From: Home: Kaplan, LA - Pipelining In: Pecos, Tx
Oh I see. I thought he was referring to EGR modification with no existing aftermarket programming. I apologize if I misinterpreted.
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No need Blake.. I just don't think pulling the guts from the EGR can be done without a programmer. It was tried lots with the guys on Cumminsforum where they did everything from plugs to plates to jumpers and nothing really worked until you took care of it at the ECM..
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I'm confused on the derate issue. I know unplugging derates, but was not aware it still derates with the Programmer? The programmer makes up for it though? 
My understand was that one could not just pull the plunger without getting codes worse than unplugging (no programmer).
My understand was that one could not just pull the plunger without getting codes worse than unplugging (no programmer).
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From: Home: Kaplan, LA - Pipelining In: Pecos, Tx
Well if you have the programmer then you dont unplug. Both full deletes and California Style the EGR Servo remains plugged in.
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I read that the same way as Blake does, EGR unplug on a stock truck.. no programming involved in Marco's discussion.
The part I wonder about pulling the guts, blocking, and leaving plugged in is.. How much does the ECM adjust timing based on %EGR? i.e. how easy is it to have too much or too little timing with the plugged and actuator pulled?
I don't see any codes popping up at all with the plunger pulled, the ECM wouldn't know the difference.
The part I wonder about pulling the guts, blocking, and leaving plugged in is.. How much does the ECM adjust timing based on %EGR? i.e. how easy is it to have too much or too little timing with the plugged and actuator pulled?
I don't see any codes popping up at all with the plunger pulled, the ECM wouldn't know the difference.
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From: Home: Kaplan, LA - Pipelining In: Pecos, Tx
Blocking off the tube prevents any circulation.
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That's the way I think it was done pre-programmer and until people figured out they could just unplug and get a cel, but no harm.
People would remove the butterfly from the TV mechanism and block the flow while everything was plugged in and got no cel.
People would remove the butterfly from the TV mechanism and block the flow while everything was plugged in and got no cel.
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