3500 High Output Turbo - Can I drop this into my Standard 2019 2500 HD Big Horn?

[Donnyboy]

Hey guys,
I recently drove my friends 6.7L 3500 HO Ram and was impressed with the increased boost. I did some research and sure enough the turbo is larger (and this is how they achieve the extra HP I guess??). Anyway, does dropping this bigger turbo into my 2019 2500HD require an updated software tune or is it plug and play? Has anyone tried this? Is there a better after market turbo option?
Thanks in advance for the responses.
Don

 

[AH64ID]

A larger turbo alone won’t add power, that comes from fuel. The turbo wouldn’t even make any more boost as it’s controlled by the ECM.

A tune would allow for more power and boost.

 

[johnmyster]

The 2019-2024 HO motor has lower compression, so they relied on external compression (turbo) vs internal compression, along with complimentary tuning. Didn't know the turbo was unique. IIRC, I think the injectors were different. Don't quote me on that.

IIRC the lower compression HO was 15:1, which one would suspect gets into more difficult to start territory especially if timing and starting aids (grid heater) are not where they need to be.

Contrast, for 2013 to 2018, the three power levels were achieved only by tuning - no hardware differences. Ray at DRD has experimented with using various factory tune files on a truck to increase power while retaining the elegance of a factory tune.. You might could talk to him about making a factory HO file for your truck. I'm sure he could get HO power levels out of a 2019 SO without hardware changes. Then again, there's a reason why the extra HO power and significantly broader torque curve didn't come with a 68rfe.

 

[Brutal_HO]

I don't know where some of you get or make up the info you're posting, but if you actually look up part numbers on Cummins Quick Serve using a RAM VIN and compare you'll see what I did:

19-24 Cummins 6.7L compression:

SO: 19:1​

HO 16.2:1​

​

Same turbo. Same injectors. Same cam.
Different pistons. Different tune.



2025 16.2:1
Bigger 10-blade turbo, new head, new block, etc. ALL NEW design.

 

[johnmyster]

Anvil of reality has been dropethed.

 

[Brutal_HO]

TBH, I've had this info in a spreadsheet since 2020... Fun to whip it out when the misinformation comes up as often as it does.

If you own a RAM, go register on https://quickserve.cummins.com/info/index.html and do a VIN-ESN lookup and add your engine. You'll have access to all the Cummins part numbers, etc. (QuickServe will now redirect to parts.cummins.com for parts lookup).

 

[Donnyboy]

Thanks for the thoughtful reply's everyone. One thing I got wrong is my friends 3500HO is a '23 not a 19'. Looking at the info you posted, it looks like my 19 has the Holset 300VG (28-30PSI) turbo and my friends 23' HO has the Holset HE400VG. They seem so close in performance though his is slightly larger.....both our trucks are deleted by the way and running aftermarket airboxes (his Banks, Mine S&B). If I did upgrade to a larger turbo I would need a fresh tune to take advantage of the increased capabilities....is that correct?

 

[Brutal_HO]

Another AI fail. Are they feeding these LLM's morons or diesel school dropouts?

I'd like to see your search input and result so I can tell that AI engine how wrong it is.

19-24 6.7L Cummins engines all use the HE300VG. It is a VGT.

Latest 2024 (mopar) turbo part number

68444771AA​

is the same HE300VG that all the 19-24 trucks use, I just looked up my 2020 and it's

68444771AA​

Those x-ref to the Holset HE300VG.

You can get an upgraded HE300VG with a larger wheel in it (60(stock)/63/66) and of course will need tuning.

 

[Donnyboy]

Ok got it...thanks for taking the time to respond....very helpful!