Who has done the EGR disconnect?

Please include experiences either way; i.e. increased performance, mpgs, carbonization, running problems, warranty problems (disconnected), decreased boost, personal thoughts/benefits.

 

Been running with EGR disconnected for about 10k miles.

Noticably better low end response, mpg about the same, engine slightly louder, check engine light on always, no warranty problems...just plug it back in and start up a few times.

My thoughts:

Less soot and carbon in my intake and intercooler, better low end....the only time it will be plugged in is when I go to the dealer.

 

I did try disconnecting it and got an engine check light - no biggie as I could read the code and clear it with the SCMT.

But I didn't really notice any change in performance so I reconnected it and have been running that way for the last 10,000 miles or so. 26,700 miles on the clock now.

 

Disconnected it for just over 5k. Noticed no difference. Hooked it back up today.

 

Little bugger just can't stay connected for some reason for last 10,000 miles. The WART exists but does not live and breath in my truck.

 

I have to agree with the above statement. MPG and increased engine noise are questionable. I think I may get a little better MPG.

 

Mine's still connected after 17k miles. A little bit o' lead foot blows all the soot and misc other stuff all over the ricers as they try to pass me. I think my right foot should keep it clean.

 

I've had it fall off for about 20K+ miles since I started having odd idles that stopped as soon as it fell off......

 

I left mine connected after the last flash. Runs good stock. If you disconnect the EGR, the PCM uses a default set of parameters because the EGR shows "out of range". The engine then I don't think will be fully optimized.

 

I disconnected mine when I did my 15,000 mile oil change. I wanted to see if the oil would look any cleaner at the next change. I hooked it back up at the 20K oil change and used scan tool to clear codes; I'm currently near 24K miles now.

I fill the tank to the brim and keep track of mileage in Excel spreadsheet. I was just looking over the sheet last night specifically looking to determine if there was any improvement with EGR disconnected. There was not any improvement for any solo mileage; there may have been a slight increase when towing the travel trailer. I do believe the coolant temperature was better when towing w/ EGR disconnected.

I could not tell any difference in the color of the oil at the oil change.

I did not notice any seat of pants difference in performance. Truck is stock.

The PCM knows when the EGR is disconnected and even when a dummy EGR valve is laying on the manifold; because it can determine EGR flow based on expected air flow/RPM and what is coming in through the MAF sensor. If the EGR is not working properly the OBDII readiness tests do not complete although there will be no SES lamp on the non CA engines.

EGR helps lower peak combustion temperature. Is there a relationship between EGR cooler failures and disconnected EGR valves because of higher exhaust temperature? Is there too much EGR flow because of failing exhaust back pressure, EBP, sensors and the resulting excess flow putting too much stress on some coolers? Is Texaco DexCool coolant that international uses a better coolant than Ford's with respect to transferring the high heat load from the EGR cooler? or perhaps the DT365 just isn't pushed quite as hard? Maybe the EGR cooler is just too small. Do the cooler failures occur more often on an 03 w/o the throttle valve or more often on the 04 with the throttle valve.

Bob

 

Could be, my thankful, luck of the 6.0 draw but, since the disconnect at around 5,000 miles I have not had issues encountered by others. Currently approaching 14,000 miles.

My purpose is not for mileage or power. I don't eat my trash, exhaust gas, and unburnt fuel and can't imagine that my engine likes it much either.

As a side note...I have no explanation for it but A/C actually worked better after disconnect. No clue why it would have an impact.

 

I disconnected mine shortly after buying my 'X. I'm at 22000 km now and it's still not connected. Back in the summer, when I first disconnected it, I noticed immediately better A/C performance. Now that it's -10C out here, I'm beginning to reconsider --- maybe cooling all my exhaust gasses would heat my feet sooner .

 

I disconnected mine a little while back (around 7000 miles on truck) Can't really seem to tell any difference at all. In fact if anything, fuel mileage may have dropped. That is probably from colder temps outside though. I think I amy hook the EGR back up for a while and see if I can notice anything then.

 

This is what made me decide:
http://www.dana.com/news/pressreleas....asp?page=1215
"The EGR engine environment is more abrasive than previous designs, and tests with standard ring coatings produced accelerated high-wear in the power cylinder system."
EGR = ACCELERATED HIGH-WEAR.... nuff said

 

I DID reconnect mine for a bit...
and the freaky idle came back - sio it fell off again ....