Well Tiria
I just picked up my 09 last week, and have just over 110 miles, way to early for me to comment. I am going to run a few tanks through the system to see what I come up with and go from there.
Keep us updated as I can use all the knowledge thats out there as I have NO experience with a diesel.

 

My dad has a stock 07.5 6.7L and he hasent had one problem with it at all dose his services at 3000kms instead of 5000kms.

He see's 18-19 mpg not towing and 14 when towing his fifth wheel.

Has 60,000kms on the speedo so far.

 

Lots of good comments on here, I unplugged mine in Oct of 08 and got great milage compared to what I got with the thing plugged in. I recently plugged it back in due to a recall on the truck I'm taking it in with edge and all to get repaired. I asked the service manager if that would void my warranty, he said only if you brought it in with a problem caused by the programmer.

 

Finally, a dealer with their head on straight. That makes sense to me.

 

Ok, I guess I'm stupid....I have waited too long, need somebody to tell me what to unplug for sure!

 

"For me, I would take insult to comments on "how to drive a diesel". We should not be subject to that kind of jabbing.. Information only would be appreciated"

The difference in driving a gas vechicle and a diesel vechicle are vastly DIFFERENT and even the difference driving various equipted (trans brakes etc) diesel equipted vechicles vary. Thus taking the time and effort to LEARN how to operate each differnt vechicle will greatly reduce problems.

People do not like having to accept that if they do not learn the different proceedures, they can not blame the manufacturer for their failures.

It is called taking personal responsibility for their individual actions or in some cases lack there of......

Ask how, you will get info.

Ask why, and you will get much different info, depending on the level of knowledge and understanding of the questioner and replyer.

 

where is it? im on my way out to unplug it...

 

Telling them how to operate a diesel engine vehicle is totally different that telling them "learn to..."


FWIW the plug is on the intake horn. The main valve is the brownish long tube type actuator that is connected to the cross over pipe. The plug is a rectangular 6 pin plug facing forward. Pull and start it up.. If you have issues with the running of the engine, you will need to get the most recent reflash from the dealer.. Just plug it back in. I've had mine off since I got the truck and have not noticed any issues.

 

Clue me in, how do you learn without someone telling or teachnig you how?

 

does it throw a code or set the check engine light on the dash when you unplug it?

 

Both.. You get that nice warm glow of the engine lite.. Luckily its pretty dim and even at night I don't even notice it anymore.. I know many that have over 160,000 miles and that light just keeps workin...LOL.


Harvie,

I am not pickin on you.. I just know its better to offer up an opinion on experience or sharing your thoughts than to just tell them to learn it.. Sort of like throwing the Dictionary at someone to learn English.. Doesn't really teach them how to do it, but if you show them you don't even need the book...Make sense?

 

[QUOTE=Lil Dog;2422534]Both.. You get that nice warm glow of the engine lite.. Luckily its pretty dim and even at night I don't even notice it anymore.. I know many that have over 160,000 miles and that light just keeps workin...LOL.

QUOTE]

I've also been thinking about unplugging my EGR to see what it'll do to mileage. What you're saying is that doing so will definitely throw a code and turn on the CEL. Does the CEL go off when/if the EGR is plugged back in? And I'm sure that the code will be stored even if the EGR is plugged back in...correct?

 

Here is the info I have found on the EGR unplug. Thanks to CumminsForum..

RECAP

1. Pulling the plug on the EGR will cause better mileage and fewer regens. General concesnsis is 2 MPG improvement.
2. It will not harm the components down stream. It will actually help them
3. It will generate a check engine light because the computer sees pieces of hardware missing. You will have to deal with it until a code free EGR solution is found.
4. Just unplugging the EGR will not allow soot to build up. Experiments after 6000 miles showed the exhaust pressure is enough to allow the exhaust pressure to bleed off the soot and condensation.
5. This is reversible and will leave a code stored in the ECM. The dealer may or may not see it. Depends on how thourgh he is. This means you can unplug the EGR and go to the dealer with it plugged back in.
6. Some earlier trucks act strange in the beginning. If this continues, you'll need to remove the flapper valve in the intake, or get a later update on the ECM.
7. Unplugging the EGR with a DPF delete has some short term effects on your truck. The two systems are tied together but work independantly. If the problems persist, then you have other problems which we will try to help you with.
8. DO NOT keep plugging in and unplugging the EGR. It confuses the ECM
9. Codes usually generated- P0405 and a low pressure code.
[10. Codes can be cleared with an Edge or a PMT. Some have had good luck with running with the codes cleared and some have not. It's possible the flash level is the problem. Clear the codes before you start and see how it
11. Best Minimum Flash levels.
2008 Standard 62350230AP
2008 Auto 62350235AQ
2007 C&C Stan 52300230AV
2007 C&C Auto 52300234AV
2007 Standard 55350230AY
2007 Auto 55350235AY

DO NOT DELETE THE CODES IF YOU CAN. Your fuel economy can be effected and it could throw your truck into a limp mode when changing climates. Temperature plays a major part in this.

 

Does any one know what resistors to add to the plug tp make the light go out?

 

lol.....are you serious??? these trucks have so much emissions garbage strapped to them it's not even funny. if you drove your truck within the absolute perfect operating parameters all of the time (which i doubt you do), your still recirculating soot back through the motor. you'll not convince me in a million years that that is a good thing. your truck will last WAY longer without an egr system, not to mention all the junk from the turbo back.