DD3's Without Fueling Module

[Stroke This 24V]

The Fueling module that I ordered was for the ETC not ETH or something cause the plugs are different. I have the Injectors and would like to go ahead and install the Injectors now so all I have left to do is put the Module on. I was planning to do this on my vacation but the module is wrong. So the question is while I have time to do it can I put the injectors in then wait for my module and still drive my truck.

 

[TxDieselKid]

go for it!!!

The answer to your question is yes, you can install the injectors and run the truck with out the box. You will not get the full power of the injectors because of the lack of a boost module. Have fun, hope your transmission holds.



AJB

 

[KatDiesel]

Its hard to say, without the extra boost, those DDIII's are gonna run a bit hot I would think, since ETH's are naturally hot. If your gonna drive around empty, then yes I would say have at it. Just watch the gauge. Did you order a "boost module" or a fueling module as well? Just wondering. If you plan on towing anything I would hold off on the injectors.

 

[MikeR]

Yes you can run without,but anytime you go above 20psi of boost the ECM will store an overboost code,and possibly set the 'check engine' light. Now that I think about it,your boost elbow comes with the boost module and not in the injector kit. Without the boost elbow,you're gonna get sky-high EGT's and without the boost module you're gonna set overboost codes and keep cutting back fuel above 20psi. I say just wait until you have everything.



-Mike

 

[KatDiesel]

Originally posted by MikeR

Without the boost elbow,you're gonna get sky-high EGT's and without the boost module you're gonna set overboost codes and keep cutting back fuel above 20psi.

Hows he going to get above 20psi withut installing an elbow? The wastegate will dump everything, and he will never see over 20psi. Unless I am missing something here? I ran my "Hot" PE for about 10,000 miles with no wastegate changes, never defueled, never set a check engine light or an overboost code (truck was scanned twice by dealer, not a word about it). When I put a spring on the wastergate then I could make roughly 29psi or so, with just injectors currently I make about 30psi. SO I don't think he would have to worry bout defuleing, or overboosting, u ntil he physically modifies the wastegate. So the question falls back to are the EGT's managable? That I can't say, I don't have an ETH, but if there is no towing or hauling involved I feel he could get away with running empty for a few days until he gets the module (whether is fueling or boost).

 

[TxDieselKid]

look what the Kat drug in....

Kat, the reasons you listed above this one, is what I was implying. The injectors are really nice once you hit a PSI of 20+. They are nice at stock boost, but really need more boost, and cooler EGT's to get full potintial. NO TOWING WITH OUT THE BOX!!! Other wise, throw them puppies in and enjoy.

 

[Fred Swanson]

With just the injectors and no boost elbow or boost module, you will set off a trouble code, because you will go above 21 psi on boost if you're in the pedal at all.



I have done it with DD2's alone.

 

[TxDieselKid]

what about???

Originally posted by Fred Swanson

With just the injectors and no boost elbow or boost module, you will set off a trouble code, because you will go above 21 psi on boost if you're in the pedal at all.



I have done it with DD2's alone.

Fred,



What about the wastegate? Will this not actuate? If not then what is the point of a module? I am not doubting you, just thought is was controled by the wastegate.



Just when I think I got something figured out, yall go and throw a wrench into the works!



AJB

 

[Fred Swanson]

Depending on the actuator, its condition, and how much preload is on the actuator rod, this determines when the wastegate is opened. Remember it starts to open at a pressure determined by the above and is fed by the compressor side of the turbo. You could still go over the 21psi mark. But again, this will vary from one turbo to another.



If you want to know when your wastegate starts to open, whip out the trusty air compressor with a regulator, and start at 20psi, and apply it to the actuator. If preload is light, it will start to open. If preload is heavy, it may not at all until you go to higher pressure, like 25psi.



My current 14cm takes about 25psi to start the wastegate opening. With a boost elbow, this delays it even more, as it is supposed to. My preload is heavy, so I can reach the maximum efficiency of the Piers Super Turbo, which is around 36psi. I hit 37psi right now. When I was in Canada in July, I was seeing 43psi with the 12cm housing.



The boost module clips the MAP sensor reading, so the PCM never sees more than 20psi, so no codes are set off. Without the boost module, you would set off codes because the MAP sensor is doing its job in reporting higher pressures.

 

[Mopar-muscle]

with dd3's , hot pe , ez and stock boost elbow opening the wastegate at 20 psi i easily make over 32 psi , and i know the gate is open as the exhaust is twice as loud .



kat you may not be able to make more becuase of the small size of the HY turbo ???

 

[MikeR]

Right Fred and John,



With the big injectors you are capable of making more boost before the wastegate can dump. I installed my original setup one piece at a time and got the same results... DD2 injectors alone was capable of 24psi and 1100deg of EGT. Added boost elbow,EGT's came down to normal but I was setting over boost codes and made 28psi. Added boost module,no more defueling and now I was able to make full power at 34psi and not set anymore overboost codes. I have an ODB2 scan tool at work so I can read and clear my own codes.



Take it from a guy who's been there and done that... . wait until you have your whole kit.



-Mike

 

[KatDiesel]

Originally posted by Mopar-muscle

kat you may not be able to make more becuase of the small size of the HY turbo ???

What I said above is/was my experience. Yes the "Hot" PE was with the HY35, however the DDIII's are with a Piers HX35, and for grins I started with the stock elbow, stock boost.



Of course now I have a different elbow and see 30psi on a normal basis. I'll add the COMP tommorrow and see where it puts it. I want it to stop at 35psi.

 

[MUDDY]

before i had the boost module/elbow,i would make over 26 lbs boost when using the propane.



98. 5 2500 275s, mopar uprate ecm, diablo power puck, 4 inch straight, air mods, home made propane system.



id be cautious with the dd 3s w/o the module and elbow.

its amazing how the module/elbow lowers egt. i wouldnt want to be without it on mine again.



mm