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2nd Generation Dodge 24 Valve Powertrain

This is a discussion forum of the 1998.5 to 2002 2nd Generation Dodge Ram Trucks with 5.9L Cummins 24 Valve Turbo Diesel power train and drive line system. This includes all sub-system including wiring, fuel, oil, exhaust, air, transmission, computers and sensors.

  1. Started by Blueox01,

    How much boost should I be able to develope with a boost elbow?

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    • 38 replies
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  2. I'm working on the truck in my sig. After installing all my upgrades last fall (pac brake, hx 35/40, 100 hp injectors, quad unit), I haven't been able to get over about 25lbs of boost even with the set screw in the boost elbow turned all the way in. Today I put a vice grip on the hose and saw a bit over 30ps of boost on a full throttle acceleration. Where in the adj process do I check the actual wastegate actuator setting/position? Its possible correct, to maybe need to adjust the length of the actuator rod? Also, I bought the manual boost controller shown by Mike in another post and have yet to install it. Mike, the red end goes towards the elbow correct?

  3. Started by Ronniemx3,

    Hi everyone, got my injectors thanks to @Dieselfuture.. but havent got time to fit them till next week when i get back from my 600 mile trip. i was going to put my boost elbow and fooler on tonight is there any point ?? Currently got a superchips tuner on and BHAF... the elbow comes pre set to 30psi. I havent got any gauges installed yet but they have been ordered. Any advice??

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    • 15 replies
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  4. Started by jumpjg,

    I recently picked up a Juice with Attitude 2nd hand. It came with everyting except the boost elbow. Not too sure what the elbow is supposed to do. I understand it is an orifice, but in a closed system that will only slow down flow, not limit pressure. I was figuring the concept was to keep the waste gate closed, allowing the boost pressure to rise. I was wondering if I could substitute a J-hook (local fab) for a boost elbow, or should I get a new part from Edge? If a J-Hook is adequate, why not remove the OEM elbow and plug the port in the compressor housing and the hose running to the actuator?Appreciate your time,Joe in St Louis

    • 23 replies
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  5. Started by rlane547,

    I installed an adjustable boost elbow today preset at 30psi. Before the elbow with the Comp on 5x5 I was seeing a moderate amount of smoke at wot. After the elbow installation it's rollin' some serious coal now at wot. Am I mistaken thinking that there should be less smoke with the elbow than without? Truck runs awesome just curious about the smoke I think I choked a poor guy on a bicycle today when I passed him.

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    • 44 replies
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  6. Started by Ironforger,

    02 3500 6 speed HO. 252k miles. Still has factory injectors & HX35W turbo, etc. No tuning mods (Yet. Maybe quadzilla and DAP 100hp 7X0.009 VCO injectors in the near future) Anyhow, my questions is this: I added a boost elbow recently. How much boost gain can I expect by adding a boost elbow? I was getting 22 psi before installing boost elbow. After installing went up to about 24 psi max. Is that to be expected? Or is there a possibility my waste gate is not fully closing? Figured I'd get some feedback from you guys before I start taking things apart. What comes first, chicken or egg? Does the fueling increase relative to boost increase? Or does t…

  7. Started by kennyv,

    Hay all. I've had a Diablo PP, boost elbow and boost fooler for quite some time. Recently the fooler died so I removed it. I still can get boost over 27, yet I don't throw a code? What am I missing? I thought I'd get a code after 22? Or will I have to maintain 22+ for a certain amount of time ?? Thoughts? Thank you.

    • 5 replies
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  8. Started by gradymayhem,

    So for those of you who saw my previous thread about my pump issues, you know that my fule pump is now hard wired into the battery. Because of this, the engine can't mandate defueling if I exceed the set boost level. So I'm planning on just getting a boost elbow since a boost fooler isn't really needed to trick my computer into thinking I'm at lower boost since it can't defuel. Anyone see a flaw in this? I feel like if this method worked, nobody would buy boost foolers.

  9. Started by kerley,

    Thinking about installing a Boost Fooler with Boost Elbow on my 1998.5 24V Cummins. If I do this before I install the RV275 injectors will I notice any increase in power or fuel mileage?It's cold and very wet here now. When the weather warms and dries up I will do the KDP, RV275 injectors and valve adjustment with the Boost Fooler. What's your advise?Thank you, Kerley

    • 1 reply
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  10. Started by Blueox01,

    Going to get a boost fooler,just getting opinions on which is the best one. I have an 01 H.O. that is getting RV275's put in and a boost elbow:shrug:

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    • 12 replies
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  11. Started by Fishcarver,

    I have been running without a boost elbow for some time and I installed the adjustable elbow today and there is no increase in boost pressure, 27-28 lbs and I am still getting over boost code. Also, if I get into it hard, as soon as I let off there is a poping noise, like a backfire in the area of the turbo. The poping noise just started last week and has only done it about 5 times and is intermittant.When I installed the boost elbow, I turned the screw down all the way, then back it out about 1-2 turns, still get the code and same boost numbers. Then cranked the screw down all the way, same results.Any ideas?

    • 8 replies
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  12. Started by 02DodgeCummins,

    Before I installed a used Quadzilla Adrenaline I could get boost at around 1500 to 1700 rpm is when you could really notice it. After install and using a stock race or tow tune I have nothing until I’m over 2200 rpm. I like to shift at 2k with my 6 speed. The IQuad app is showing no boost. My pillar gauge says it’s there. My question is do I have to adjust the tune and how would I go about doing so?

  13. Started by GSP7,

    I finaly got a boost gauge hooked up (slow poke). Whats your boost gauge read when you are just cruzin 'bout 60 on a flat hwy, just light throutle cruzin for mpg, no grade?

    • 12 replies
    • 1.8k views
  14. Started by dodgedieselnewbie,

    Good evening, Can someone tell me when doing a boost leak test... should the system stay pressurized if you have no leaks? Should your boost gauge rise to the pressure you apply? Thanks!

    • 29 replies
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  15. Started by Mopar1973Man,

    Well gang... Mopar1973Man is down... I had a air system failure yesterday about Council, ID climbing the grade and passing a RV and heard. BOOM! Psssst.... As I let off the throttle the noise stopped. Get back into the throttle and boost might climb to 5-8 PSI, pyro going like a rocket, lots of black smoke and the noise returns... I stopped in New Meadows, ID for a moment to look and can't see the leak... so I stopped at the hardware store to pickup the stuff to build a boost tester. So I'll be fixing 2 leaks now A/C and boost...

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    • 39 replies
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  16. Started by Ironforger,

    Getting ready to purchase gauges.What is the typical factory boost pressure range? Trying to decide on a 10 - 30 psi guage or 10 - 50 psi.Also, I'm going to install an EGT guage as well. Were do most guys put the thermocouple probe? I'll probably drill a hole & tap 1/8 npt on the top of the exh manifold pre-turbo - that is right there before the flange where the manifold bolts up to the turbo. That's where I did it with great success in my isuzu NPR diesel.And for you guys who are going to warn me about metal drill/tap chips falling in and wrecking the turbo, don't worry as the best way is to drill and tap slowly while engine is idling. Thats right! Get up there a…

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    • 10 replies
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  17. Started by Blueox01,

    Any opinions on have much boost i can safely run with a stock fuel system?

    • 21 replies
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  18. Started by Salerno5.9,

    So on my 2001 the water meth controler and manual boost gauge match right up. The iQuad shows 1psi when the other 2 are reading 5-6 psi it starts to read closer once I’m above 30 psi. Bad MAPS sensor? What do y’all think

    • 4 replies
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  19. Started by hex0rz,

    So I posted a thread a little while ago about my turbo and it throwing a p0234 code. Got no respose. So, I decided I would try and dig a little deeper into the issue. I thought about making a leak tester to see if I can figure out what was going.So I went to the local stores and parted together a tester. Got a 4" rubber coupling and a 4" adapter with a cap. Put an air regulator on the end and called it good.So I put the tester on the inlet of the turbo and put the pressure to it. If I apply more than 10psi, the tester wants to slide off the turbo from the pressure. The rubber will also balloon out. I was getting a little nervous about a catastrophic failure but I managed …

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    • 11 replies
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  20. Started by AZ2ndgen99,

    I don't belive my wastegate is operating properly and I'm looking at replacing the actuator. Now for the rookie questions. Should I go for the stock replacement rated to 21psi boost or spend the money on an AFE rated to 40 psi? And . How much more boost can the stock motor with 150,000 mi take?