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Write Up: SDP LML EGR Delete

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271K views 144 replies 49 participants last post by  USMC1302Colt  
#1 · (Edited)
Write Up: LML EGR Delete

When doing the EGR delete you will either have to modify your stock up pipe (cut and weld), or buy a new up pipe (sold separately).

If you are installing an exhaust at the same time then this will be much easier. Installing a new down pipe is also a good idea while the old one is out.

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Step 1: Remove passenger side inner fender well. Turning the wheels to the left will allow more room for the install.
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Step 2: Disconnect exhaust somewhere near the middle. This will allow you to slide the front pipe back enough for the down pipe to come out. If you are installing a new exhaust system, remove it completely.


Step 3: To remove the front pipe, disconnect the V band clamp connecting it to the down pipe.
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Step 4: working from the engine bay. Remove the plastic "6.6" intake resonator. 3 bolts hold this in place.
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Step 5: Remove the air intake elbow with flat head screw driver.
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Step 6: Remove turbo heat shield. 3 bolts hold this piece on. Reinstallation is optional.
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Step 7: Remove the silver "S pipe". 9 bolts hold this in place. Disconnect all sensors/plugs. Twist lock ring and pull out the "s pipe".
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Step 8: Remove the EGR hot pipe. 4 bolts hold this on.
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Step 9: Remove turbo inlet pipe and PCV connection on back.
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Step 10: Remove the down pipe. First, loosen the v-band clamp on the turbo side. The down pipe may still feel tight. Take a flat head and pry around the clamp. Remove the 3 sensors on the down pipe.

Step 11: Working from the wheel well, remove the down pipe bolt from the tab on the up pipe. Remove down pipe.
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Step 12: Remove up pipe riser heat shield. 2 bolts hold this on.
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Step 13: Removing the Up Pipe. This is the hardest part of the delete, so make sure you have a good breaker bar and impact sockets. You will need a 12mm 12 point socket to remove the 9 bolts that hold the factory up pipe in place.

I've high lighted the 3 areas where the bolts are. Each section has 3 bolts holding the up pipe in place. Imagine the down pipe and riser heat shield removed. The bolts are behind those...
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Step 14: Start by removing the 3 bolts on the exhaust manifold. Section 1. Keep gasket.
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Step 15: Next, remove the 3 bolts that connect the riser to the EGR. These can be accessed from underneath. Section 2. The gasket and bolts will not be re used.

Step 16: The last 3 are the hardest to remove (section 3). You won't be able to see much so most of it will be by feel. You'll notice a metal coolant line in front of one of the bolts...the hose will have to be loosened and pushed aside to access the bolt. Loosen the one bolt and push to the side.
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Step 17: Remove all 3 bolts from section 3. Unplug the sensor from the riser section. Remove the up pipe.
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Step 18: If you bought a new up pipe or are using a lb7 pipe then skip this step. Cut the riser section off the up pipe. Using a piece of metal weld the hole shut.
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#84 ·
Finally finished up the EGR delete, the improved Profab plate is very solid. The only downside was I had to fabricate a connecting piece to hold the steel coolant line in place.


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#85 ·
For the downpipe, I still couldn't figure out a way to get it out. Just make sure I did it correctly: I unbolted the three bolts holding the heat shield, then I bolt the downpipe back to place, then I tried to pull the heat shield out from the passenger wheel well.
Please advise.


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#86 ·
I was able to pull the heat shield up through the top. Keep twisting it around. Cut it up and bend it if you have to.
 
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#88 ·
If you do go with up pipe blocker plate, my first choice would be Profab/DHD. It is one solid piece made by stainless steel. Second would be XDP which has two piece design. Base on the position and setup of the up pipe raiser, the blocker only hook up to one of the supporting holes will fail, just a matter of time.
 
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#89 ·
Tips for remove downpipe. You just need a long wooden/steel bar to push the top part of the heat shield against the firewall to make it as flat as possible, then pull from passenger side wheel well. It only takes a couple pulls to get it off. Then take the downpipe itself is super easy. If I am doing it again, it should take 15 mins to take the whole downpipe off.


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#90 ·
hey guys I'm pretty new to this EGR delete stuff but I'm going to be deleting my truck soon and I'm wanting to install a LML max flow bridge, cold side tube, turbo inlet, and coldair intake by PPEI or HSP with the LB7 up pipe. I'm just wondering do i also have to buy an EGR delete kit so i have all the blocker plate or does this kit do all that?
 
#91 ·
If you are using LB7 up pipe, the you only need the dog bone style blacker plate which comes with any of those kits.
 
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#92 ·
This write up help me a lot. It took me about 12 hrs to do. The one thing that helped out a lot was that we jacked up the tranny a little and doing that gave us a little more room to reach the bolts on the up pipe (3 bolts in the middle). Installing up pipe wasn't bad. The biggest issue was the coolant hose that went to the fire wall because plastic ended would not make a tight fit. Lucky my brother had an extra 90 degree coolant hose off his grand national. Trying to figure out that out took use about hr or so to figure it out to make it work and had to go into o Reilly's to get some extra hose and etc. Doing a full egr delete on my LML is night and day! Can't believe the difference!!
 
#95 · (Edited)
Yes. I still can't believe how much more room without that stupid EGR.
I am 5'10", after turning the steering wheel all the way to the left, I could sit "up" before the passenger wheel well "behind" the tire. Would make it those bolt more reachable. But I didn't replace my up pipe.
 
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#94 ·
The one in the middle is a quick disconnect one. That's the one you are going to disconnect. The one on the drive side is not from the fire wall, that hose will not be reused. The L shape hose in the kit is for connecting those two ends. Don't touch the passenger side one. It has nothing to do with EGT delete.


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#104 ·
cant do that lol i have family that lives out in Texas people have been telling me to have them register it over there to one of them but ive been reading and it says that's illegal?


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#107 ·
So I'm new to the forum and diesel world. Please forgive me if I'm posting this in the wrong area. I have a 2015 GMC LML. I am looking to do a CAT/DPF delete. I will most likely get EFI by Kory. Also I am wanting to install the blocker plates on the EGR. I will do a full delete eventually but will be doing intake bridge, up pipe, and all that at the same time. Funds are currently limited. With the blocker plate install I was wondering what all that involves. Of course I know putting the plates in but is that it. Do I not need to do hose mods or what. I will be getting the delete pipe, tuner, plates, and CAI. Any info would be greatly appreciated.
 
#108 ·
Finally getting around to fully deleting the egr. Question for you guys, did you have to drain the coolant prior to deleting the egr? I think that's what my delete kit instructions from XDP say.
 
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#109 ·
I just deleted the EGR in my 2014 lml a couple days ago and replaced the up pipe with the "rudys diesel" straight pipe. It was a major pain in the ass but I finally got it done. But my local mechanic told me that I have to run a vacuum on the coolant system in order to get all the air out?? And if I don't I could do major damage to my engine i.e. blown head gasket. I followed the instructions in the duramax supplement and it seems to be working just fine. He also said that since I didn't do this that I probably ruined the new thermostats I also installed because they go into a "fail safe" position if the coolant gets too hot. Has anyone ever heard of this?? Is this true?
 
#111 ·
Any updates on this? I really wasn't planning on running a vacuum on the coolant system.
 
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#114 ·
Sub'd for reference
 
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#115 ·
Does anyone have a tool list to do this? I am getting ready to do this soon and want to make sure I have all the tools needed before I start.
 
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#117 ·
the photos are still showing for me when I view the thread in the AutoGuide app...I'd try that and see. but it looks like photobucket is now charging users for 3rd party sharing...which is ridiculous. that's why they aren't showing up on the regular site. try the app and let me know
 
#119 ·
That ^^^^ SUX!
 
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