Cummins on drugs......no plans for a rehab program

anderson750

I'm working on it Rose
Location
Price, Utah
Title of this thread is largely due to L.T., since I posted about the addition of a water/methanol kit on my truck in his project built for towing thread. A little background on what I am running is as follows:
  • 2011 Dodge 3500 Dually with 6 speed Auto
  • 6.7L Cummins
  • H&S mini max tuner
  • EGR delete
  • DPF delete
  • 5" turbo back exhaust
  • AFE intake
I mainly use this truck to tow our toy hauler to races and fully loaded my truck & trailer weight is anywhere between 24,000 to 26,000 pounds depending on what is going with me to the races. This is our race set up.


With all of the deletes and programmer, I have no shortage of power or torque, just EGT's that climb really quick. I can pull up most climbs like Spanish Fork Canyon at 60 mph.........I am just having to keep a really close eye on the EGT's. Thus the reason for the addition of the Water/Methanol injection. Most of the research I have done, shows that you should see a 200-300 degree drop in EGT's under load. There are some other benefits that include some extra HP & torque, but that is not what I am looking for in the addition......just the lower temps.

With the kit, you can run straight water or a water/methanol mixture. They report that you get better cooling with the water/methanol, so I will try them both. For the water/methanol, you can buy the boost juice or just run the blue window washer fluid since it is 49% methanol. My reporting of results will not be overly scientific, but more seat of the pants and what I see. There are so many factors that can change the result, like ambient temp, head wind, etc, that I don't really want to over think it.

The kit I went with was the Snow Performance MPG Max. It is the same as there Tow Max, except for it has an option for running constant injection. The system is a pretty straight forward and easy install for anybody with basic mechanical skills and 2 good arms. Since I destroyed my shoulder and had to have surgery, it was going to be about 3-4 months before I could do the install myself, so I took it to a friend that works at a local shop and had him do it. The pictures I have don't necessarily tell the whole story since I had to get some work done and James probably did not want me hanging around the whole time watching and taking pictures..

Kit comes with a 7 gallon plastic tank. I am planning on adding a larger tank, but am doing some research on what metal based material will not corrode with a constant exposre to water or intermittent exposure to methanol. Any advice here is appreciated.


James mounted the pump under my bed and the solonoids next to the pump. The other thing in that picture is an electric ball valve that I have a switch for in the cab that dumps fuel into the main tank from the auxillary tank you can see in the picture above



The intake was removed, drilled and tapped for the injectors.


The kit also adds a port to monitor the boost.


I already have an EGT probe that was added when I did the delete kit and it is mounted in the block off plate above where cylinder 6 is in the manifold. I could have used this probe with the kit, but wanted to have a comparison of what my programmer reports the EGT's to be and what the temp is at the neck of the manifold above where it enters the turbo.
 

anderson750

I'm working on it Rose
Location
Price, Utah
I towed Friday over Price Canyon on my way out to Jericho to start setting up for our National Hare & Hound race that is this weekend. First impressions of the system are good. The day was a little cooler with temps being in the 50's when I left. Pulling up the canyon I did not push it any harder than I normally would and I kept a close eye on the EGT readout on both my programmer and the first thing I noticed is that there is about a 250-300 degree difference between the 2 probes under heavy load with my programmer being the cooler of the 2. This concerns me a little since I have been running this delete setup for 2 years now and I do not want to fry my turbo. Under the heaviest load pulling up the canyon, my tuner was reading out 1100-1150 degree's and the water/methanol display was reading out 1350-1450. My programmer is set to defuel at 1300 and if the water methanol EGT probe is correct, then I would have been hitting temps of 1600 a fair amount of times over the last 2 years and I just cannot imagine my turbo holding up to that abuse for that long.

The only challenge that the system presented to my on this trip is the fact that I used all of my 7 gallons of water from Price to Santaquin. When it ran out of water I saw a noticible spike in EGT's and could even tell a slight difference in how it was pulling. To alleviate the problem with running out of water, I have plumbed in a 35 gallon tank that I will carry with me when I am towing my trailer. I will post up pics of the set up later, since I have the back of my truck loaded with bikes and gear.
 

blznnp

Well-Known Member
Location
Herriman
What amount of a horse power tune do you run? I want to do something to my truck, '12 6.7, but just not sure what. The truck feels like it has not very much power compared to my old F350 with a spartan tuner and the 6.4 with the compound turbo set up. Not looking to be a HP monster, just something to get it going a little quicker. Awesome trailer, I would love something like that
 

anderson750

I'm working on it Rose
Location
Price, Utah
What amount of a horse power tune do you run? I want to do something to my truck, '12 6.7, but just not sure what. The truck feels like it has not very much power compared to my old F350 with a spartan tuner and the 6.4 with the compound turbo set up. Not looking to be a HP monster, just something to get it going a little quicker. Awesome trailer, I would love something like that

According to this, with the deletes and exhaust it is around 175 on the highest setting.


Towing home today up Spanish Fork Canyon, I was able to maintain a constant speed between 60-65 mph without even getting close to defueling. It is not scientific by any means, but my computer display of mpg usually show between 9-10 mpg when towing and coming home today it showed 11.4..........since I use an auxillary tank to give me extra fuel, I am not going to go through the hassle right now of trying to figure out actual mpg, since it does not really matter to me for this. When I have manually checked it against the display, it has been anywhere from .5 to 1 mpg lower than the display.

Overall, I am more than pleased with the results I have seen with running straight water.
 
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blznnp

Well-Known Member
Location
Herriman
Thanks for that link, crazy looking at those numbers, I ran a 275hp tune daily on my 6.4, and I still had a 300 and 350 tune.
 

anderson750

I'm working on it Rose
Location
Price, Utah
It is a 2013 Cyclone 4000. It will be awhile before I could get some pics since I just got back from living in it for the last week while we were putting on a race.
 

LT.

Well-Known Member
Great to see your set up and your modifications! On these 6.7l Cummins engines, I have read that since the engine had a Diesel particulate filter that the motor is designed to run a little hotter than the older 5.9l. This is due to the regeneration cycle that the exhaust used to have to go through to clean the DPF. I have noticed that even on the No Power tune the EGT's will run hotter than they did on the older 5.9l with the same load. This makes sense to me but, I cannot find any direct comparison between the two motors side by side. Just my simple mind trying to make sense of the hotter EGT's.

There is an added bonus for running water/methanol injection on a Diesel engine. The water/methanol will also clean the engine a bit as it runs. Since these 6.7l Cummins used to run a EGR I can only imagine that the internals got a little dirty with that system in place. By removing that system and by using the drugs I can only speculate that your engine will be much better for the drugs.

LT.
 

anderson750

I'm working on it Rose
Location
Price, Utah
It may be a coincidence, but since I have been running this, I have been throwing a code for "crank case ventilation restriction". I need to do some digging, but I cannot seem to locate anywhere that there is a crank case vent/filter.
 

anderson750

I'm working on it Rose
Location
Price, Utah
So how much did the water meth end up lowering your EGTs

Under load it is right around 200 degree's.....cruising down the freeway on fairly flat ground it is around 100 degrees. I have been happy with it, but the only draw back is that it is necessary to carry a significant amount of water. I have plumbed a 35 gallon tank into the 7 gallon tank that came with the kit. The first week of June I towed to a race in Snowville and used about 25 gallons of water to get there.
 

anderson750

I'm working on it Rose
Location
Price, Utah
I bought it online for around $950 from XDP and there was about 3 hours of labor to install it. If I remember correctly, XDP took about $100 off the price of it since I was also buying an intercooler at the same time.
 

amp713

Active Member
That crank case vent is easy to swap and its set up on a manufacture timer if you hadnt taken care of that yet ha
 

amp713

Active Member
very nice, i just hadnt read your thread before and saw that post as i was skimming through and never saw a reply ha
 
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