[motorgoat811]

I believe GDE stated max sustained egt is 1550, but I keep it below 1400 to be safe.
I put water meth injection in mine,
so I'm towing up Hills like a boss

 

[motorgoat811]

Did you use a kit for the water/meth injection? Which one? Would love to hear about your setup.

I'm using an AEM water meth kit. Installed the AFE pipes and welded a threaded bung right after the intercooler. using a little 250cc nozzle with boost proportional injection. -40 blue washer fluid which is about a 50/50 mix.

even with the smallest nozzle, there's noticeable power and fuel economy gains while towing. towing my 6000lb travel trailer in mountainous British Columbia, I usually get 17-18mpg.

Also, if you've ever looked inside your intake manifold, its usually pretty gnarly. water meth injection cleans that right up, valves and all. one of the main reasons I put it in.

 

[motorgoat811]

Motor goat: So your AEM water/meth kit cleans up all the deposits and caking of soot caused by the EGR into the intake and on the swirl valves? So the abrasive soot melts down and doesn't hurt the engine? Is it emissions compliant?

It cleans it up slowly so there's no harm to the engine. If you plan on injecting a lot of it though, you should start off slow. Use a small nozzle for the first 6 months or so. I ended up just sticking with the small nozzle because I don't want to go through a gallon per hour when I'm towing. Also. With the small nozzle there is basically zero chance of hydrolocking your engine.

I don't know how it fares with emissions compliance. I do know that methanol burns very clean and the mixture will improve overall combustion efficiency.

 

[motorgoat811]

I normally run in the 600 degrees F. range under normal operation. If towing, It often goes to 700 -800 degrees. Now during regenerations it will go to the 1,200 to `1,300 *F range.

are you towing a skateboarder? I can hit 700 pretty easy off a red light, not towing.

 

[motorgoat811]

I would like to see pic's of the intake from an ecodiesel after water/meth.

well i dont want to pull it off just for a pic, but if i ever do, ill take some pictures for sure. ive tried to get pictures from the old egr port and though the inlet, but they didnt turn out well. i can see the work its doing by looking in with a flashlight though.

 

[motorgoat811]

No doubt turbo upgrades would be a performance boost, but I'm pretty sure that doesn't help lower egt, which is what this discussion is about. New turbo(s) is also a major modification, Which most people don't care to do. Along with that extra airflow you might as well do a larger exhaust, re do all the intake piping and get a higher capacity intercooler. Not to mention a custom tune. Expensive rabbit hole if you ask me.

I think water methanol injection is one of the only proven methods of getting more (safe) power while lowering egt.

 

[motorgoat811]

Ran water meth for two years with no noticable difference in my intake manifold, even ran it so aggressive for a while I would go 8 gallons with every tank of fuel. At the end of it I came to the conclusion it adds 15 rwhp and helps lower egts a tiny bit but thats about it. Long term one is better off with a compound turbo setup.

sorry to hear about your experience, sounds like it wasn't really optimized for your truck. A 10% gain in power is very achievable. lets hear about your set up and maybe we can figure it out...

-kit you used
-nozzle size
-injection mixture
-injection boost pressure
-injection location
-other relevant mods

 

[motorgoat811]

I haven't seen a reliable compound setup on one of these engines yet. Larger single turbo would be the only change I'd make to the turbo.

Motorgoat811, what tank are you using for the -40 fluid?

I'm just using the 1 gallon tank that came with the AEM kit, mounted in the engine bay for now. Ive heard of people repurposing the def tank, I may try that out when I get time to do it. Unfortunately the GDE tune disables the def gauge...