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Old 12-27-2018, 05:05 PM   #1
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New to me 6.7

Hey guys, I just bought a 2017 6.7 6speed. I have never had a non ppump truck so I have a few questions.

1. Should I wait out the factory warranty to delete it or is the EGR and DEF doing more harm then what I am risking in giving up 24k miles in warranty?

2. When I do finally delete it I think I will go with the MM3. What should I look for in tunes? This will be my daily driver, thinking a 4" strait pipe and want it to make the best usable power and highest fuel mileage or a compromise of the two...my commute is mostly highway if that matters.
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Old 12-27-2018, 08:13 PM   #2
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How many miles on it, currently?
24k miles is a blink in time, especially if you're doing a lot of driving.
The EGR always concerns me more than the DEF, since I feel that EGR is the engine killer, rather than either version of the exhaust treatment systems.

Also, with having taken a lot of these engines apart, I gotta say I'm seeing a few of the 2013+ trucks with dropped seats and valves, so I'd try to keep a valid warranty on it for as long as possible, even though the EGR is the worst thing about those engines.

Just my .

Mark.
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Old 12-27-2018, 08:16 PM   #3
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Bought my 14 tuned and deleted. MM3. I am just not a fan of the screen set up right now. Can't decide to just retune and use MM3 or sell it and get cts 2 and EFI.
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Old 12-27-2018, 08:47 PM   #4
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Congrats on the new truck.
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Old 12-27-2018, 08:49 PM   #5
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Quote:
Originally Posted by 99GreenCummins View Post
Bought my 14 tuned and deleted. MM3. I am just not a fan of the screen set up right now. Can't decide to just retune and use MM3 or sell it and get cts 2 and EFI.
EFI and CTS 2 is lifeee
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Old 12-27-2018, 09:13 PM   #6
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EFI and CTS 2 is lifeee
The one in Tyler's 07 is just easier to use and I like the gauge layouts better. Need to recover some money before I decide anything.
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Old 12-27-2018, 09:14 PM   #7
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Congrats on the new truck.
Thank you!
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Old 12-27-2018, 09:19 PM   #8
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Quote:
Originally Posted by Mark Nixon View Post
How many miles on it, currently?
24k miles is a blink in time, especially if you're doing a lot of driving.
The EGR always concerns me more than the DEF, since I feel that EGR is the engine killer, rather than either version of the exhaust treatment systems.

Also, with having taken a lot of these engines apart, I gotta say I'm seeing a few of the 2013+ trucks with dropped seats and valves, so I'd try to keep a valid warranty on it for as long as possible, even though the EGR is the worst thing about those engines.

Just my .

Mark.
There is just below 34k on it now....I am reading that the Cummins has a 5year/100k warranty but when I ran a warranty check it only said 5year/60k

Which is accurate? (first vehicle in my life new enough to have a warranty).

ERG is what scares me, pushing that gunk back thru your intake CANNOT be harmless.

As far as DEF I can honestly say I haven't researched it enough to really understand what it does.
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Old 12-27-2018, 09:21 PM   #9
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I also wouldn't mind the EZ Lynk. I could get that from Firepunk who I would say know how to tune a truck...but I don't really understand the pros/cons vs MM3 with that.
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Old 12-27-2018, 10:07 PM   #10
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Attached are pics of a 2008 chassis cab engine that had EGR issues.
This is essentially TAR in the engine.
It's locked up solid, no rods exited the block.
I am DEFINITELY NOT looking forward to this teardown!

Mark.
Attached Images
File Type: jpg 1545969593841-818667173.jpg (311.5 KB, 0 views)
File Type: jpg 1545969646320-1070625874.jpg (102.1 KB, 0 views)
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Old 12-27-2018, 10:11 PM   #11
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Originally Posted by Mark Nixon View Post
Attached are pics of a 2008 chassis cab engine that had EGR issues.
This is essentially TAR in the engine.
It's locked up solid, no rods exited the block.
I am DEFINITELY NOT looking forward to this teardown!

Mark.
This is exactly what EGR makes me think. I feel like every oil change will take 7 hours to let the molasses drain one plop at a time...maybe it ain't that bad but that pic says it is...
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Old 12-27-2018, 10:21 PM   #12
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This is a severe condition.
It's basically the result of severe neglect and ignoring CELs and codes.

I've seen them physically melt the injector solenoids on the injectors, it gets so hot in the crank case when the EGR fails.

USUALLY it's C&C engines that are this way, which are usually in work trucks driven by employees, with no clue or no care.

Mark.
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Anarchy: The state of existence where there are no masters & no slaves. Therefore, Anarchy means the ABSENCE OF SLAVERY, or, in other words, FREEDOM.
 
Old 12-28-2018, 02:29 PM   #13
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It is just complete bullchit that deleting emissions voids warranty. If I leave it on a stock tune and delete it, it should last longer and be less likely to have problems.
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Old 01-20-2019, 09:15 PM   #14
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Looking into parts for delete/tune.

Is it true that on the '13+ trucks you can just go wit a down pipe back exhaust because the stock down pipe is just a 4" tube?

I know up to 2012 the CAT was in the down pipe but I have seen some say that has changed.

I am gonna stay 4" so I would love to just do down pipe back if it makes no difference.
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Last edited by 12valve95; 01-20-2019 at 09:16 PM. Reason: Spelling
 
Old 01-20-2019, 09:25 PM   #15
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Find you a mod friendly dealer. You'd be surprised how many are out there.
This
 
Old 01-20-2019, 09:48 PM   #16
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Originally Posted by 12valve95 View Post
Looking into parts for delete/tune.

Is it true that on the '13+ trucks you can just go wit a down pipe back exhaust because the stock down pipe is just a 4" tube?

I know up to 2012 the CAT was in the down pipe but I have seen some say that has changed.

I am gonna stay 4" so I would love to just do down pipe back if it makes no difference.
I have some odds and ends delete stuff kicking around here.
Both EGR plates, the intake horn plate and possibly the bracket that holds the cooler pipe in place.

As far as the downpipe, 2013+ didn't have the wire pre-converter in it, but it does have a flex joint, something like some import and GM cars from the late '90s used.
It's downstream a bit, so it could be whacked and spliced, if you felt you wanted to.

FWIW, I tore into that engine pictured above and so far the head looks okay, no piston contact, but #6 cylinder definitely didn't like having no oil to the piston, she scored the cylinder pretty good.
Soot in oil sucks!
It took me a 1/2 hour, after messing with that engine, to get my hands proper enough to eat with, even with decent gloves on.
Once it hits your skin, it spreads and embeds like nothing else.

Mark.
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Anarchy: The state of existence where there are no masters & no slaves. Therefore, Anarchy means the ABSENCE OF SLAVERY, or, in other words, FREEDOM.
 
Old 01-20-2019, 11:00 PM   #17
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Quote:
Originally Posted by Mark Nixon View Post
I have some odds and ends delete stuff kicking around here.
Both EGR plates, the intake horn plate and possibly the bracket that holds the cooler pipe in place.

As far as the downpipe, 2013+ didn't have the wire pre-converter in it, but it does have a flex joint, something like some import and GM cars from the late '90s used.
It's downstream a bit, so it could be whacked and spliced, if you felt you wanted to.

FWIW, I tore into that engine pictured above and so far the head looks okay, no piston contact, but #6 cylinder definitely didn't like having no oil to the piston, she scored the cylinder pretty good.
Soot in oil sucks!
It took me a 1/2 hour, after messing with that engine, to get my hands proper enough to eat with, even with decent gloves on.
Once it hits your skin, it spreads and embeds like nothing else.

Mark.
Yea I think I am going to delete it now rather then later...I do not plan to beat on it AT ALL so I don't see me having problems that I would actually take it to a stealership to fix.

I am considering getting a new intake to delete the EGR and throttle valve in one shot and looks like ill go TB on the exhaust but I would definitely take the parts off your hands if you have all the stuff...Let me know what you got and what you want for it.
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Old 01-23-2019, 08:52 AM   #18
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Quote:
Originally Posted by 12valve95 View Post
There is just below 34k on it now....I am reading that the Cummins has a 5year/100k warranty but when I ran a warranty check it only said 5year/60k

Which is accurate? (first vehicle in my life new enough to have a warranty).

ERG is what scares me, pushing that gunk back thru your intake CANNOT be harmless.

As far as DEF I can honestly say I haven't researched it enough to really understand what it does.
My '18 has a 5 year/100K mile powertrain warranty. I was under the impression that's what they all had.

Here's the generic warranty PDF for 2018 trucks (I assume your 2017 is the same/similar):
Attached Files
File Type: pdf Garrett's 2018 Ram 3500 Warranty PDF.pdf (854.3 KB, 0 views)
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Old 01-23-2019, 09:19 AM   #19
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My '18 has a 5 year/100K mile powertrain warranty. I was under the impression that's what they all had.

Here's the generic warranty PDF for 2018 trucks (I assume your 2017 is the same/similar):
It is...I have 3yr 66k left. The question is, is waiting that out doing more long term damage with EGR installed then the low potential that a Cummins will have a problem in the first 100k without it?
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Old 01-23-2019, 10:52 AM   #20
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Don't laugh at not needing something in under 100k!
I've had MANY engines in this shop with under 50k that had dropped valves, seats, spun mains, EGR failures and even burns that had recalls out, that were covered.

To tell the truth, the 6.7 trucks have a myriad of issues that are either recalls, or covered under mileage warranty.

I'm not being alarmist, just telling you how it is.
If you can possibly keep a warranty, do so, hoping it drops a valve, or other calamity, at 98k.

Mark.
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