Fast idle on 2014 G56

[cowdoc]

I am kicking the tires on a 2014 G56. Currently I have a 2008 G56 with the installed clutch switch and enabled fast idle. I realize that the fast idle is factory installed on the automatic trucks but am wondering if anyone has figured a way to get it to work on the manuals. Not having the ability to idle the truck in the cold would be a deal breaker for me.

Second question is about the EGR/DPF deletes on the 4th gen trucks with DEF. My 2008 gained 6 mpg and is going strong at 360K miles following the full delete. Is there the same benefit in the newer models? Guessing it's not as easy to get the parts now as it was in 2009 when I "fixed" my current truck.

Any other thoughts on switching from 3rd to 4th generation would be appreciated.

 

[Jared Herzog]

I can not answer your first question but i know all the trucks will idle up when it is cold. My Aisin truck can also be manually idled up. If i remember correctly, and i could be wrong, the g56 trucks can not be idled up. Hopefully someone with one will chime in as my last g56 was an 05 that i could idle up. The newer def trucks do not see the mileage gains of the previous models when doing a delete. Stock for stock they get better mileage out of the box. They also use much less egr and are less likely to have fuel dilution. This also allows for a 15,000 mile oil change or six months whichever comes first. I have never had any emission related issues with my past 14 or current 15.

 

[Jared Herzog]

Double post delete

 

[EDankievitch]

There was a thread a while back that had said there was a wire that needed to be hooked up to the Emergancy break to tell the computer the break was actavated. Once the computer got the signal the fast Idle could be used... I don't remember what year trucks that aplied to but I'd start my search there...

 

[TRAMPLINEMAN]

The newer def trucks do not see the mileage gains of the previous models when doing a delete. Stock for stock they get better mileage out of the box. They also use much less egr and are less likely to have fuel dilution. This also allows for a 15,000 mile oil change or six months whichever comes first. I have never had any emissions related issues with my past 14 or current 15.

While I do not know if you have first hand experience with this or it's something you read/heard, I have to respectfully disagree. I see the differences every day from stock to deleted on same year same model def equipped trucks. While maybe not 100% legal, the deleted trucks get better mileage have less issues and are way more reliable. This is from first hand experience, not rumors at a fuel pump.

 

[Jared Herzog]

While I do not know if you have first hand experience with this or it's something you read/heard, I have to respectfully disagree. I see the differences every day from stock to deleted on same year same model def equipped trucks. While maybe not 100% legal, the deleted trucks get better mileage have less issues and are way more reliable. This is from first hand experience, not rumors at a fuel pump.

I agree that with less parts they are more reliable. I hate emission components and all the political foolery and games attached to them. When and if my parts fail i will have them fixed under warranty. When no longer covered i will delete. I was trying to convey that deleting a def truck will not net a six mile per gallon increase like it may have on the 07.5-12 trucks. Delete if you want but do it for yourself and not expecting to see a huge bump in fuel mileage. On older trucks the fuel bump alone would pay for the delete parts but i am not so sure anymore with the newer trucks.

 

[gsbrockman]

While I do not know if you have first hand experience with this or it's something you read/heard, I have to respectfully disagree. I see the differences every day from stock to deleted on same year same model def equipped trucks. While maybe not 100% legal, the deleted trucks get better mileage have less issues and are way more reliable. This is from first hand experience, not rumors at a fuel pump.

I'm at 210,926 miles, 344 idle hours, and 3,902 drive hours. ZERO visits for any emissions related issues. I've heard the "way more reliable" and "increased longevity" rationales for deleting the 2013 & up DEF trucks more than once; I've yet to verify any credible information that supports the above. In all honesty.....lots of members on other forums have admitted a slight decrease in fuel economy on 2013 & newer trucks after deleting.

 

[TRAMPLINEMAN]

I'm at 210,926 miles, 344 idle hours, and 3,902 drive hours. ZERO visits for any emissions related issues. I've heard the "way more reliable" and "increased longevity" rationales for deleting the 2013 & up DEF trucks more than once; I've yet to verify any credible information that supports the above. In all honesty.....lots of members on other forums have admitted a slight decrease in fuel economy on 2013 & newer trucks after deleting.

I pay attention to your posts and I know the success you've had with your truck. I have around a third of your miles and lost track of emissions related dealer visits. My truck goes in again tomorrow for emissions problems.

The claims I'm referring to are from the guys I work with every day and I'm around these trucks every day. Three different brands of diesels that all came stock with def. The deleted trucks do get better mileage and are there every day of the week. The stock trucks, including mine, get worse mileage and a second vehicle is required to get to work cause the trucks are so unreliable.

 

[gsbrockman]

I pay attention to your posts and I know the success you've had with your truck. I have around a third of your miles and lost track of emissions related dealer visits. My truck goes in again tomorrow for emissions problems.

The claims I'm referring to are from the guys I work with every day and I'm around these trucks every day. Three different brands of diesels that all came stock with def. The deleted trucks do get better mileage and are there every day of the week. The stock trucks, including mine, get worse mileage and a second vehicle is required to get to work cause the trucks are so unreliable.

Previously you'd mentioned "same year same model def equipped trucks" with the misunderstanding that you were speaking of RAM pickups exclusively.

I will agree that there are increases to be obtained in the DEF PowerStroke & DEF DuraMax camps when deleting. I'll still respectfully disagree with you that the MPG increases with RAM / Cummins deleting (2013 & newer) are very, very small......especially given the amount of initial outlay involved for the hard parts & programming.

 

[TRAMPLINEMAN]

Previously you'd mentioned "same year same model def equipped trucks" with the misunderstanding that you were speaking of RAM pickups exclusively.

I will agree that there are increases to be obtained in the DEF PowerStroke & DEF DuraMax camps when deleting. I'll still respectfully disagree with you that the MPG increases with RAM / Cummins deleting (2013 & newer) are very, very small......especially given the amount of initial outlay involved for the hard parts & programming.

Sorry, I should have been a little clearer. There are two '15 Duramax Denalis, one stock and one deleted. The deleted one gets better mileage and has had zero problems. Four Powerstrokes, one '14 two '15's and one '16. One '14 and one '15 are deleted, better mileage and no problems. The other two have had a lot of problems, all emissions related. There's four '11 Cummins all stock and one '11 deleted. These are 450's and all equipped the same. The stock trucks get around 8-10 mpg, hand calculated. The deleted truck gets around 14-16. Pretty significant difference, I think. We've also had many problems with the stock trucks compared to the deleted one. There's one '15 Cummins that's deleted. He's got around 40K miles on it with no problems and has been getting 18 mpg in the Midwest winter. My '14, I've been getting 14-15 this winter.

 

[cowdoc]

Thanks for the response guys. I deleted my 2008 because of oil dilution and two turbos full of soot to the point that they could not be cleaned (replaced under warranty) by the time I reached 100K. After the delete I purchased the stainless steel turbo cleaning hose and run three cans of Mopar turbo cleaner through every 40,000 miles or so. It is good to hear with the DEF trucks this may not be as much of a problem.

As for the setting the fast idle, I have searched a lot of threads and all I can come up with is that it is not possible with the manual transmission. Still wondering if anyone has had any luck in finding a solution. Maybe I could rig a cable to the accelerator pedal and pull it out a touch when I need to set it at 1600 rpm. I some ways I miss the simplicity of my '92 and her hand throttle.

 

[TCDiesel]

BD has the manual Idle up Box https://www.dieselperformance.com/s...7-2017-5-9l-6-7l-2014-2017-3-0l-ecodiesel-627 I'm with Greg on Deletes , delete when necessary on 2013+ 6.7 otherwise they are capable of 300K miles + trouble free, My 2013 with 30K is Now 4 years old NOT 1 emissions related CEL, and it sits 4/5 months just being driven weekly around the block and occasional parts pickup during winter , it does makes 2 trips to the Rockies pulling 4 place Snowmobile V-nose trailer winter months.

 

[cowdoc]

Perfect. Just what I was looking for.