It was a good trip, cracked my front pass rim on the way down and it was horribly windy, dust storm galore and even snowed. The rods have lived for around a year now so I hope they hold for a while longer!!! It was in the 30's on my way down and truck was still getting hot easily so without screwing my wastgate rod in all the way (stock location now) and getting more boost that may help some?

 

Good to hear! Hope we can make it out there next year. Didn't come together this year. I do not believe I have seen snow there before :-)

Based upon what you said I'd try to get something put together from Matt that you can use for heavy towing, at altitude. You have a nice combo, but staying in it for a long time with that weight simply will not work unless its turned back a bit. I'm not bashing the 38r either. Its a great turbo, but its i do not think it pushes enough air with the fuel combo to keep her cool, or just pull more fuel out and adjust timing... one of the two.

Pure water was 100-125 degrees cooler. I have towed heavy (15-23k no BS) behind the truck for probably 50-55% of the miles on it and wouldn't run without it. On hard pulls we'd eat 40% gal of H20 for every gal of diesel burned.

Best of luck to ya. We are going to go through this exact dance on a 230/100 setup and s366... we will see how it goes. Hopefully can get a bit of help from Matt. Let me know what you end up changing.

 

[QUOTE=nossliw;16024947]Good to hear! Hope we can make it out there next year. Didn't come together this year. I do not believe I have seen snow there before :-)

Based upon what you said I'd try to get something put together from Matt that you can use for heavy towing, at altitude. You have a nice combo, but staying in it for a long time with that weight simply will not work unless its turned back a bit. I'm not bashing the 38r either. Its a great turbo, but its i do not think it pushes enough air with the fuel combo to keep her cool, or just pull more fuel out and adjust timing... one of the two.

Pure water was 100-125 degrees cooler. I have towed heavy (15-23k no BS) behind the truck for probably 50-55% of the miles on it and wouldn't run without it. On hard pulls we'd eat 40% gal of H20 for every gal of diesel burned.

Best of luck to ya. We are going to go through this exact dance on a 230/100 setup and s366... we will see how it goes. Hopefully can get a bit of help from Matt. Let me know what you end up changing.[/QUmatt

At the time I didn't want to spend the extra $ on a t4 setup and have to fool around with boost pipes so I went 38r and didn't want do head studs. But when I end up building a forged rod motor that will be what goes in. You just doing water injection no methenol? I'll talk with matt on it, see what he says. I forgot who did the tuning but I know it wasn't matt.

 

[QUOTE=abowman;16025237]Completely understand. Went through the same scenario, but with a smaller injector. I just finished the truck up last night and have a few things to do tonight before the test drive, but I am curious what matt sheds light on with a resolution to fueling. We have to tame these 230/100s back as well. I would like to know what he says in your situation.

Yes I run straight water on at 12 psi now. single nozzle. Non of the progressive nozzle crap.

 

[QUOTE=nossliw;16030374]Well called yesterday and they said we will do a new tune. That's it, seemed a little pre ocupied or busy on the phone and matt wasn't available. So we will see what happens.

 

[QUOTE=abowman;16030432]Well I hope its worth the effort. I hope they can provide an explanation of what they did to the tune... fuel, timing, etc...

 

[QUOTE=nossliw;16030569]Yeah they're great to deal with and very very helpful all the time. But the one thing that I don't like is trying to get ahold of them is kind of hard, and they never keep any of the serial numbers on file. Because I can plug the laptop up and get the serial number off the Hydra program but whenever I'm trying to do stuff with my dads truck or my brothers it becomes a pain cuz then I gotta wait until they can get to my house so I can plug my laptop up into it. But other than that I love dealing with gearhead there bunch of great guys over there. And do awesome tunes.

 

[QUOTE=abowman;16030744]
Agreed 100%, they are excellent in what they do. I hope the reburn effort solves your issue. I am curious if you can get any feedback on what they changed. I have another one to send them at the end of week in need of almost the identical procedure. Too hot when towing heavy, similar setup...

 

[QUOTE=abowman;16030744]I think the reason for me not being able to get ahold of them very easy though is a time lapse difference from time zones. But just gave them another call and matts not in during the week so they gave me his email and hopefully if I can get a call back from him and talk about cylinder pressures with the water or water methanol injection system

 

[QUOTE=nossliw;16030786]
This was my load, also larz is the one doing my tunes

 

What kind of egts do you see during your normal day to day driving? Empty in a "go fast" tune also?
My current tow tune puts me around 400-450 to the wheels. Towing with power is not the problem just so as everything else is up to par.
Have you double checked for boost leaks? A pin hole pulling that kind of weight can make all the difference in the world! How old is your air filter? I do not think the 38R is big enough for your setup but if your filter is old.... Yeah.
Just throwing out the obvious at this point to make sure you haven't overlooked the basics. I've made that mistake plenty of times
Judging by that picture you're a guy I could hang out with!

 

Yeah fresh air filter put on night before I left. Up pipes should be good, just did gaskets with my last clutch 10k ago. I could have a leak but not likely. What turbo you suggesting? S366? Also I'm around 7-800* just cruising empty, Low tune. Getting on it in every gear I will see 12-1300* empty by the time I'm ready to shift again. My high tune I'll git 1500* easily by next shift.

 

I can't really suggest much as I'm no expert in big power with a 7.3.
That sounds perfectly normal cruising egts... For a Cummins not so much the ol 7.3.
Do what you can with the tuning first and foremost, if nothing else can be done then look at a turbo swap, you T4 h2e seems to be the next level.
Double check those gaskets on the uppipes! I replaced gaskets and they were shot in less than 10k miles.

 

I personally think the 366 is a bit too small for your setup and what you do with it. their 369 just came out, and I still think its still too small. I'd bump up to a 4 series if you can deal with the increased lag at a cost to keep it cool. All of which are a better options than the 38r in my opinion.

Curious to see what you get back on your tunes and see what difference it makes. Maybe thats all it take! Hopefully they can turn back the fuel at a cost of HP in a tow tune to keep her cool. Keep us informed as I have a chip will go in for the same treatment.

 

What does every one think about going to a .84 turbine housing on the 38r with a compound setup with a s400? So I get enough air with minamal lag?